Musannaf Ibn Abi Shaybah 2067 — The fitrah: what is counted in it

Mujahid said: Six things are part of the fitrah of Ibrahim (peace be upon him): trimming the moustache, using the tooth-stick (siwak), parting the hair, cutting the nails, cleaning oneself after relieving oneself (istinja), and shaving the pubic hair. Three of them relate to the head and three to the rest of the body.