Al-Lu'lu Wal-Marjan 957 — The Book of Al-Li'ân (An oath taken by both the wife and the husband when he accuses his wife for committing illegal sexual intercourse [refer the Qur'ân (V.24:6)]

Abu Hurairah Narrated from:

A man came to the Prophet ﷺ and said, "O Allâh's Messenger! A black child has been born for me." The Prophet ﷺ asked him, "Have you got camels?" The man said, "Yes." The Prophet ﷺ asked him, "What colour are they?" The man replied, "Red." The Prophet ﷺ said, "Is there a grey one among them?" The man replied, "Yes." The Prophet ﷺ said, "Whence comes that?" He said, "May be it is because of heredity." The Prophet ﷺ said, "May be your (latest) son has this colour because of heredity." ( Sahîh Al-Bukhârî, Hadîth No. 225, Vol. 7)