Surah Ar-Rum, ayah 39

30:39

وَمَآ ءَاتَيۡتُم مِّن رِّبٗا لِّيَرۡبُوَاْ فِيٓ أَمۡوَٰلِ ٱلنَّاسِ فَلَا يَرۡبُواْ عِندَ ٱللَّهِۖ وَمَآ ءَاتَيۡتُم مِّن زَكَوٰةٖ تُرِيدُونَ وَجۡهَ ٱللَّهِ فَأُوْلَٰٓئِكَ هُمُ ٱلۡمُضۡعِفُونَ ٣٩

Wamā ātaytum mir ribal liyarbuwa fī amwālin-nāsi falā yarbū 'indallāhi wamā ātaytum min zakawātin turīdūna wajhallāhi fa ulā'ika humul-mud'ifūn

And whatever you give for interest [i.e., advantage] to increase within the wealth of people1149 will not increase with Allāh. But what you give in zakāh,1150 desiring the face [i.e., approval] of Allāh - those are the multipliers.1151

Footnotes

1149 The phrase includes several connotations, among them: a) that which is given as usury or interest, b) that which is given on the condition that it be repaid with interest, and c) a gift given with the intention of obtaining from the recipient greater benefit or a larger gift.

1150 The meaning of ṣadaqah (voluntary charity) is included here.

1151 Of their blessings on earth and their rewards in the Hereafter.