It was narrated that Abut-Tufail said:

Mu’awiyah did not come to any corner of the House but he touched it. Ibn 'Abbas (رضي الله عنه) said: The Prophet of Allah (ﷺ) only touched these two corners, Mu'awiyah said: None of its corners are to be forsaken. 'Abdul-Wahhab said: The two corners were the Yemeni Corner (ar-Ruknul-Yamani) and the corner where the (Black) Stone is.