Abdullah bin Buraydah narrates from his father (may Allah be pleased with him), who said: In the Jahiliyyah, when a boy was born to us, we would slaughter a sheep on his behalf, shave his head and smear his head with (the slaughtered animal's) blood. Then, when Islam came, (we changed the practice, and) when a boy was born to us we would slaughter a sheep, shave his head and smear his head with saffron. This hadith is sahih (authentic) on the condition of the two Shaykhs (Bukhari and Muslim), and they did not record it.