Muwatta Imam Malik Book of Hajj, Hadith 196

Yahya related to me from Malik from Nafi that Abdullah ibn Umar used to trim his beard and moustache when he shaved at the end of a hajj or umra.

وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ نَافِعٍ، أَنَّ عَبْدَ اللَّهِ بْنَ عُمَرَ، كَانَ إِذَا حَلَقَ فِي حَجٍّ أَوْ عُمْرَةٍ أَخَذَ مِنْ لِحْيَتِهِ وَشَارِبِهِ .