Those who devour usury will not stand except as stand one whom the Evil one by his touch Has driven to madness. That is because they say: "Trade is like usury," but Allah has permitted trade and forbidden usury. Those who after receiving direction from their Lord, desist, shall be pardoned for the past; their case is for Allah (to judge); but those who repeat (The offense) are companions of the Fire: They will abide therein (for ever). (Surah 2, Verse 275)

Say: If it be that your fathers, your sons, your brothers, your mates, or your kindred; the wealth that you have gained; the commerce in which you fear a decline: or the dwellings in which you delight are dearer to you than Allah, or His Apostle, or the striving in His cause; then wait until Allah brings about His decision: and Allah guides not the rebellious. (Surah 9, Verse 24)

O you who believe! Shall I lead you to a bargain that will save you from a grievous Penalty? (Surah 61, Verse 10)

O you who believe! When the call is proclaimed for the prayer on the day of Friday, come to the remembrance of Allah and leave off business, this is better for you if you did but know! (Surah 62, Verse 9)

Then when the prayer is finished, you may disperse through the land and seek the Bounty of Allah and remembers Allah much, that you may be successful. (Surah 62, Verse 10)

And when they see some merchandise or some amusement they disburse headlong to it and leave you standing, say, "that which is with Allah is better than any amusement or merchandise! And Allah is the Best of providers." (Surah 62, Verse 62)