Sahih Muslim 2189
صحيح مسلم#2189SahihAbu Huraira reported Allah's Messenger (ﷺ) as saying:He who attends the funeral till the prayer is offered for (the dead), for him is the reward of one qirat, and he who attends (and stays) till he is buried, for him is the reward of two qirats. It was said: What are the qirats? He said: They are equivalent to two huge mountains. Two other narrators added: Ibn 'Umar used to pray and then depart (without waiting for the burial of the dead). When the tradition of Abu Huraira reached him, he said:" We have lost many qirats
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih Muslim is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 11:67