Abū Isḥāq Ibrāhīm ibn Muḥammad ibn Sufyān informed us, from Muslim ibn al-Ḥajjāj, who said: Ibn Numayr narrated to us, my father narrated to us, ʿUbayd Allāh ibn ʿUmar narrated to us, from Nāfiʿ, from Ibn ʿUmar, that the Messenger of Allah, peace and blessings be upon him, said: "May Allah have mercy on those who shave their heads." They said: "And those who shorten their hair, O Messenger of Allah?" He said: "May Allah have mercy on those who shave their heads." They said: "And those who shorten their hair, O Messenger of Allah?" He said: "May Allah have mercy on those who shave their heads." They said: "And those who shorten their hair, O Messenger of Allah?" He said: "And those who shorten their hair."