Mukhtasar Bukhari

Narrated Abu Huraira (may Allah be pleased with him): The Messenger of Allah (peace and blessings be upon him) said: "Ibrahim (peace be upon him) did not tell a lie except on three occasions. Two of them were for the sake of Allah. One was his saying (as a way of dissimulation): 'I am sick.' The other was his saying: '(I did not do it), but the big idol did it.' And (the third is narrated as follows:) Ibrahim (peace be upon him) and Sarah (his wife) were traveling and they reached the land of a tyrant king. It was said to the king: 'A man has come here with a very beautiful woman.' So the king sent for Ibrahim (peace be upon him) and asked him about the woman. He said: 'She is my sister.' Then Ibrahim (peace be upon him) went to Sarah... and (Abu Huraira, may Allah be pleased with him) narrated the rest of the hadith. (See the blessed hadith: Book: On the Explanation of Buying and Selling... Chapter: Buying a slave from a Harbi disbeliever, or gifting or freeing a slave girl or slave from a disbeliever...) (Note: There is no contradiction between this hadith and the verse of the Qur'an where Ibrahim (peace be upon him) is called truthful. Firstly, these are apparently lies but not lies in reality. Secondly, there are various forms of lying. In some cases, lying is not only permissible but also a cause of honor, such as lying to reconcile between two people.)