The Prophet once said, “If someone among you sees wrong he must right it by his hand if he can (deed, conduct, action). If he cannot, then by his tongue (speak up, verbally oppose); if he cannot, then by his gaze (silent expression of disapproval); and if he cannot, then in his heart. The last is the minimum expression of his conviction (faith, courage).”

It is reported that the Prophet once entered a mosque and saw at prayer a venerable old man with a long white beard. He was told that the man was in the mosque all day long, worshipping and dispensing the words of Allah to others. The Prophet then asked how he earned his living and was told that a merchant, not known for his piety, supported him. The Prophet remarked that of the two, the merchant was indeed the more worthy.

You will never achieve righteousness until you donate some of what you cherish. And whatever you give is certainly well known to Allah. (Quran 3:92).

You are the best community ever raised for humanity—you encourage good, forbid evil, and believe in Allah. Had the People of the Book believed, it would have been better for them. Some of them are faithful, but most are rebellious. (Quran 3:110).

O messengers! Eat from what is good and lawful, and act righteously. Indeed, I fully know what you do. Surely this religion of yours is [only] one, and I am your Lord, so fear Me [alone]. (Quran 23:51-52).