Quran on Spending

This is what we do all the time. We spend! We spend on food. We spend on clothes. We spend for Education.We spend for comfort , luxury and fun. We spend for us and people we care.

We spend for Allah's sake, too! Its called charity or  زكوة in the language of Quran. The order of Zakat is next to Salah صلوة , if you notice. For example

 وَأَقِيمُواْ ٱلصَّلَوٰةَ وَءَاتُواْ ٱلزَّكَوٰةَ وَٱرۡكَعُواْ مَعَ ٱلرَّٲكِعِينَ

2:43 And be steadfast in prayer; practise regular charity; and bow down your heads with those who bow down (in worship).

Now study the meanings of Zakat , first . 

Its "To Purify" and it has been made clear here, in Quran.

92:18	Those who spend their wealth for increase in self-purification,
92:19	And have in their minds no favour from anyone for which a reward is expected in return,
92:20	But only the desire to seek for the Countenance of their Lord Most High;
92:21	And soon will they attain (complete) satisfaction.

Remember, it is not on saved money only, as referred usually. It is spending money in the name of Allah, continuously. Chapters or Surahs of Quran revealed in Makka and Madina, both have the same order...of..
وَأَقِيمُواْ ٱلصَّلَوٰةَ وَءَاتُواْ ٱلزَّكَوٰةَ
Allah will reward such people who spend, regularly.
3:134 Those who spend (freely), whether in prosperity, or in adversity; who restrain anger, and pardon (all) men;- for God loves those who do good;-

And this spending is according to one's pocket.
65:7 Let the man of means spend according to his means: and the man whose resources are restricted, let him spend according to what God has given him. God puts no burden on any person beyond what He has given him. After a difficulty, God will soon grant relief.

And the spending is after our needs are fulfilled.

2:219........." They ask thee how much they are to spend; Say: "What is beyond your needs." Thus doth God Make clear to you His Signs: In order that ye may consider-

And what we should spend? 

2:215 

They ask thee what they should spend (In charity). Say: Whatever ye spend that is good, is for parents and kindred and orphans and those in want and for wayfarers. And whatever ye do that is good, -God knoweth it well.

Whatever we spend is for the benefit of our own souls

2:195 

And spend of your substance in the cause of God, and make not your own hands contribute to (your) destruction; but do good; for God loveth those who do good.

64:16 

So fear God as much as ye can; listen and obey and spend in charity for the benefit of your own soul and those saved from the covetousness of their own souls,- they are the ones that achieve prosperity.

This whole section beautifully explains the concept of spending for the sake of Allah.

2:261	The parable of those who spend their substance in the way of God is that of a grain of corn: it groweth seven ears, and each ear Hath a hundred grains. God giveth manifold increase to whom He pleaseth: And God careth for all and He knoweth all things.
2:262	Those who spend their substance in the cause of God, and follow not up their gifts with reminders of their generosity or with injury,-for them their reward is with their Lord: on them shall be no fear, nor shall they grieve.
2:263	Kind words and the covering of faults are better than charity followed by injury. God is free of all wants, and He is Most-Forbearing.
2:264	O ye who believe! cancel not your charity by reminders of your generosity or by injury,- like those who spend their substance to be seen of men, but believe neither in God nor in the Last Day. They are in parable like a hard, barren rock, on which is a little soil: on it falls heavy rain, which leaves it (Just) a bare stone. They will be able to do nothing with aught they have earned. And God guideth not those who reject faith.
2:265	And the likeness of those who spend their substance, seeking to please God and to strengthen their souls, is as a garden, high and fertile: heavy rain falls on it but makes it yield a double increase of harvest, and if it receives not Heavy rain, light moisture sufficeth it. God seeth well whatever ye do.
2:266	Does any of you wish that he should have a garden with date-palms and vines and streams flowing underneath, and all kinds of fruit, while he is stricken with old age, and his children are not strong (enough to look after themselves)- that it should be caught in a whirlwind, with fire therein, and be burnt up? Thus doth God make clear to you (His) Signs; that ye may consider.
2:267	O ye who believe! Give of the good things which ye have (honourably) earned, and of the fruits of the earth which We have produced for you, and do not even aim at getting anything which is bad, in order that out of it ye may give away something, when ye yourselves would not receive it except with closed eyes. And know that God is Free of all wants, and worthy of all praise.
2:268	The Evil one threatens you with poverty and bids you to conduct unseemly. God promiseth you His forgiveness and bounties. And God careth for all and He knoweth all things.
2:269	He granteth wisdom to whom He pleaseth; and he to whom wisdom is granted receiveth indeed a benefit overflowing; but none will grasp the Message but men of understanding.
2:270	And whatever ye spend in charity or devotion, be sure God knows it all. But the wrong-doers have no helpers.
2:271	If ye disclose (acts of) charity, even so it is well, but if ye conceal them, and make them reach those (really) in need, that is best for you: It will remove from you some of your (stains of) evil. And God is well acquainted with what ye do.
2:272	It is not required of thee (O Apostle), to set them on the right path, but God sets on the right path whom He pleaseth. Whatever of good ye give benefits your own souls, and ye shall only do so seeking the "Face" of God. Whatever good ye give, shall be rendered back to you, and ye shall not Be dealt with unjustly.
2:273	(Charity is) for those in need, who, in God's cause are restricted (from travel), and cannot move about in the land, seeking (For trade or work): the ignorant man thinks, because of their modesty, that they are free from want. Thou shalt know them by their (Unfailing) mark: They beg not importunately from all the sundry. And whatever of good ye give, be assured God knoweth it well.
2:274	Those who (in charity) spend of their goods by night and by day, in secret and in public, have their reward with their Lord: on them shall be no fear, nor shall they grieve.

Allah neither likes the niggard (miser) nor the spendthrift.

4:36	Serve God, and join not any partners with Him; and do good- to parents, kinsfolk, orphans, those in need, neighbours who are near, neighbours who are strangers, the companion by your side, the wayfarer (ye meet), and what your right hands possess: For God loveth not the arrogant, the vainglorious;-
4:37	(Nor) those who are niggardly or enjoin niggardliness on others, or hide the bounties which God hath bestowed on them; for We have prepared, for those who resist Faith, a punishment that steeps them in contempt;-
4:38	Not those who spend of their substance, to be seen of men, but have no faith in God and the Last Day: If any take the Evil One for their intimate, what a dreadful intimate he is!
4:39	And what burden Were it on them if they had faith in God and in the Last Day, and they spent out of what God hath given them for sustenance? For God hath full knowledge of them.
4:40	God is never unjust in the least degree: If there is any good (done), He doubleth it, and giveth from His own presence a great reward.

47:38

Behold, ye are those invited to spend (of your substance) in the Way of God: But among you are some that are niggardly. But any who are niggardly are so at the expense of their own souls. But God is free of all wants, and it is ye that are needy. If ye turn back (from the Path), He will substitute in your stead another people; then they would not be like you!

This is what the Spendthrift (Money-waster) is called in Quran.

17:26	And render to the kindred their due rights, as (also) to those in want, and to the wayfarer: But squander not (your wealth) in the manner of a spendthrift.
17:27	Verily spendthrifts are brothers of the Evil Ones; and the Evil One is to his Lord (himself) ungrateful.
17:28	And even if thou hast to turn away from them in pursuit of the Mercy from thy Lord which thou dost expect, yet speak to them a word of easy kindness.
17:29	Make not thy hand tied (like a niggard's) to thy neck, nor stretch it forth to its utmost reach, so that thou become blameworthy and destitute.
17:30	Verily thy Lord doth provide sustenance in abundance for whom He pleaseth, and He provideth in a just measure. For He doth know and regard all His servants.

 

Note: Doing good to others involves spending of good time too, e,g. volunteering in hospitals ,helping animals,etc.