Sunan an-Nasa'i, Hadith 2949 ⓘ
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."
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 .
also referenced under: Book 24, Hadith 0 (In-Book) & Volume 3, Book 24, Hadith 2952 (DarusSalam)