Hadith
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
Sahih · Abu Ghuddah
Sunan an-Nasa'i 2949 ·Book 24, Hadith 332·Also available on sunnah.com·