Sunan Abi Dawud 1876
سنن أبي داود#1876HasanIbn ‘Umar said The Apostle of Allaah(ﷺ) did not give up touching the Yamani corner and the (Black) Stone in each of his circumambulations. Ibn ‘Umar used to do so
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniHasan
Muhammad Muhyi Al-Din Abdul HamidHasan
Zubair Ali ZaiIsnaad Hasan
In-book reference: 11:156