Sunan Ibn Majah 1561
سنن ابن ماجه#1561SahihIt was narrated from Anas bin Malik that the Messenger of Allah (ﷺ) marked the grave of ‘Uthman bin Maz’un with a rock
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniHasan Sahih
Muhammad Fouad Abd al-BaqiHasan Sahih
Shuaib Al ArnautHasan
Zubair Ali ZaiHasan
In-book reference: 6:129