‘Abdullāh ibn ‘Umar (may Allah be pleased with him) reported: I did not see the Prophet (may Allah's peace and blessings be upon him) wiping with his hand anything of the House except the two Yemeni Corners. [Sahih/Authentic] - [Al-Bukhari and Muslim]

عن عبد الله بن عمر -رضي الله عنهما- قال: «لَمْ أَرَ النبِيَّ -صلَّى الله عليه وسلَّم يَستَلمُ- منَ البيتِ إِلا الرُّكنَينِ اليَمَانِيَينِ». [صحيح.] - [متفق عليه.]