Hadith 507100
Chapter 20: Hajj - كتاب الحج
وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ نَافِعٍ، أَنَّ عَبْدَ اللَّهِ بْنَ عُمَرَ، كَانَ يَغْتَسِلُ لإِحْرَامِهِ قَبْلَ أَنْ يُحْرِمَ وَلِدُخُولِهِ مَكَّةَ وَلِوُقُوفِهِ عَشِيَّةَ عَرَفَةَ .
Yahya related to me from Malik from Nafi' that 'Abdullah ibn Umar used to do ghusl for ihram before he entered ihram, and for entering Makka, and for standing on the afternoon of 'Arafa.
Reference Muwatta Malik 507100
USC-MSA web (English) reference : Book 20, Hadith 3