Sunan an-Nasa'i 1940

Qutaybah narrated to us, saying: ‘Abthar narrated to us, from Burd, the brother of Yazid ibn Abi Ziyad, from al-Musayyab ibn Rafi‘, who said: I heard al-Bara’ ibn ‘Azib say: The Messenger of Allah (peace and blessings of Allah be upon him) said: ‘Whoever follows a funeral bier until the prayer is offered will receive one qirat of reward. Whoever accompanies it until it is buried will receive two qirats of reward. A qirat is like Mount Uhud.’