مُوَطَّأُ مَالِكٍ
Muwatta Malik 818
Hajj
وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ هِشَامِ بْنِ عُرْوَةَ، أَنَّ أَبَاهُ، كَانَ إِذَا طَافَ بِالْبَيْتِ يَسْتَلِمُ الأَرْكَانَ كُلَّهَا وَكَانَ لاَ يَدَعُ الْيَمَانِيَ إِلاَّ أَنْ يُغْلَبَ عَلَيْهِ .
Yahya related to me from Malik from Hisham ibn Urwa that his father used to salute all the corners when he did tawaf of the House and did not omit the Yamani corner unless he was prevented from it.
Arabic/English book reference: Book 20, Hadith 115