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.”Bukhari transmitted it.

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. Muslim transmitted it.

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.”Bukhari transmitted it.

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.”(Bukhari and Muslim.)

Rafi' b. Khadij reported God’s Messenger as saying, "The price paid for a dog is impure, the hire paid to a prostitute is impure, and the earnings of a cupper are impure.”Muslim transmitted it.

Abu Mas'ud al-Ansari said that God’s Messenger forbade the price paid for a dog, the hire paid to a prostitute, and the gift given to a soothsayer. (Bukhari and Muslim.)

Aba Juhaifa said that the Prophet forbade the price paid for blood1, the price paid for a dog, and the earnings of a prostitute, and cursed him who accepted and him who paid usury, him who tattooed and him who had himself tattooed, and the sculptor2. Bukhari transmitted it. 1. This refers to the blood of an animal. 2. Musawwir. The meaning is more comprehensive than any English word. It also means“painter”, or anyone who produces representations of living beings.

Jabir said he heard God’s Messenger say in the year of the Conquest when he was in Mecca, "God and His Messenger have declared forbidden the sale of wine, animals which have died a natural death, swine and idols.”He was asked what he thought of the fat of animals which had died a natural death, for it was used for caulking ships, greasing skins, and making oil for lamps, and after saying that it was unlawful he added, "God curse the Jews! When He declared the fat of such animals unlawful they melted it, then sold it and enjoyed the price they received.“ (Bukhari and Muslim.)

‘Umar reported God’s Messenger as saying, "God curse the Jews! Fats were declared unlawful for them, but they melted them and sold them.”(Bukhari and Muslim.)

Jabir said the God’s Messenger forbade payment for dogs and cats. Muslim transmitted it.