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Sunni

Leading classical Islāmic jurist and theologian Abdullāh b. Abī Zayd says in his ' Risalah ', "and the Prophet ordered that the beard be left alone and allowed to grow abundantly and that it not be trimmed. Malik said: “And there is no objection in trimming from its length when it becomes very long.” And what Malik said, more than one of the Companions and the Successors also said.”"

Muslim jurists have unanimously agreed that shaving the entire head, and, to a lesser degree, cutting it during pilgrimage is preferable. It is proven that Muhammad shaved his entire head, and he prayed for those who shaved their heads or cut their hair.

Islām also teaches followers to shave/pluck body hair such as pubic and armpit hair on a regular basis (40 days). Shī'a and Sunnī narrations from the Prophet state that: "God's Prophet (May God bless him) said: 'Anyone who believes in God and the Hereafter should not postpone shaving the pubic hair for more than forty days.'"