The Book of Hajj
24/157. Chapter:
Touching the two Yemeni corners
Sunan an-Nasai
أَخْبَرَنَا قُتَيْبَةُ، قَالَ حَدَّثَنَا اللَّيْثُ، عَنِ ابْنِ شِهَابٍ، عَنْ سَالِمٍ، عَنْ أَبِيهِ، قَالَ لَمْ أَرَ رَسُولَ اللَّهِ صلى الله عليه وسلم يَمْسَحُ مِنَ الْبَيْتِ إِلاَّ الرُّكْنَيْنِ الْيَمَانِيَيْنِ .
It was narrated from Salim that his father said: "I did not see the Messenger of Allah touching any part of the House except the two Yemeni Corners."
Reference : Sunan an-Nasa'i 2949In-book reference : Book 24, Hadith 332English translation : Vol. 3, Book 24, Hadith 2952