Salman told that when God’s messenger was questioned about clarified butter, cheese and wild asses he replied, “What is lawful is what God has declared lawful in His Book, what is unlawful is what God has declared unlawful in His Book, and what He has said nothing about belongs to the things He ignores.”
Ibn Majah and Tirmidhi transmitted it, Tirmidhi saying this is a gharib tradition which, according to the soundest opinion, is mauquf.
Ibn ‘Umar reported God's messenger as saying, “I wish I had a white loaf made from tawny wheat and softened with clarified butter and milk.” A man who was present rose up and getting one brought it. He asked what it had been in, and when he was told it had been in a lizard skin, he told him to take it away.
Abu Dawud and Ibn Majah transmitted it, Abu Dawud saying this is a tradition which is rejected.