Laws of Inheritance (Al-Faraa'id)

Bukhari :: Book 8 :: Volume 80 :: Hadith 758

Narrated Sa'd:

I heard the Prophet saying, "Whoever claims to be the son of a person other than his father, and he knows that person is not his father, then Paradise will be forbidden for him." I mentioned that to Abu Bakra, and he said, "My ears heard that and my heart memorized it from Allah's Apostle