Ar-Room 30:39

Whatever you lend in usury in order to gain more at the expense of people’s wealth[16], it will not increase [in reward] with Allah. But whatever you give as charity[17], seeking Allah’s pleasure – it is they who will have multiple rewards[18].

[16] i.e., to be repaid with interest; or a gift given with the intention of obtaining a greater benefit or a larger gift. [17] i.e., voluntary or obligatory charity.
[18] Of its blessings in this life and its rewards in the Hereafter.

And whatever you give for interest [i.e., advantage] to increase within the wealth of people[1149] 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]

[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.

39. And that which you give in gift[5] (to others), in order that it may increase (your wealth by expecting to get a better one in return) from other people’s property, has no increase with Allâh; but that which you give in Zakât (sadaqa - charity etc.) seeking Allâh’s Countenance, then those, they shall have manifold increase.

[5] (V.30:39) See Tafsîr Ibn Kathir

That which ye give in usury in order that it may increase on (other) people's property hath no increase with Allah; but that which ye give in charity, seeking Allah's Countenance, hath increase manifold.