Abu Salama bin 'Abdur Rahman أبو سلمة بن عبد الرحمن بن عوف · Sacrifice (Kitab Al-Dahaya)

When a boy was born to one of us in the pre-Islamic period, we sacrificed a sheep and smeared his head with its blood; but when Allah brought Islam, we sacrificed a sheep, shaved his head and smeared his head with saffron.