He reported God's Messenger as saying, “A time will come to mankind when a man will not care whether what he gets comes from a lawful or an unlawful source.”
Narrated Abu Huraira reported God’s Messenger as saying that:
God is good and accepts only what is good, and He has given the same command to the believers as He has given to the Messengers, saying, “0 Messengers, eat of what is good and act righteously” (Al-Qur’an 23:51) and also, “You who believe, eat of the good things which We have provided for you” (Al-Qur’an 2:172). Then he mentioned a man who makes a long journey in a dishevelled and dusty state, who stretches out his hands to heaven saying, “My Lord, my Lord,” when his food, drink and clothing are of an unlawful nature, and he is nourished by what is unlawful, and asked how such a one could be given an answer.
An-Nu'man b. Bashir reported God's Messenger as saying, “What is lawful is clear and what is unlawful is clear, but between them are certain doubtful things which many people do not recognize. He who guards against doubtful things keeps his religion and his honour blameless, but he who falls into doubtful things falls into what is unlawful, just as a shepherd who pastures his animals round a preserve will soon pasture them in it. Every king has a preserve, and God’s preserve is the things He has declared unlawful. In the body there is a piece of flesh, and the whole body is sound if it is sound, but the whole body is corrupt if it is corrupt. It is the heart.”
Al-Miqdam b. Ma'dikarib reported God's Messenger as saying, “No one has ever eaten better food than what he eats as a result of the labour of his hands. God’s prophet David used to eat from what he had worked for with his hands.”
