Hadith 508850
Chapter 20: Hajj - كتاب الحج
وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ نَافِعٍ، أَنَّ عَبْدَ اللَّهِ بْنَ عُمَرَ، كَانَ يُحَرِّكُ رَاحِلَتَهُ فِي بَطْنِ مُحَسِّرٍ قَدْرَ رَمْيَةٍ بِحَجَرٍ .
Yahya related to me from Malik from Nafi that Abdullah ibn Umar used to spur on his mount in the middle of Muhassir over the distance of a stone's throw.
Reference Muwatta Malik 508850
USC-MSA web (English) reference : Book 20, Hadith 186