Musnad Abu Ya'la al-Mawsili 160:245

Zakariya narrated to us, Dawud ibn al-Zibriqan narrated to us, Dawud ibn Abi Hind narrated to us, from al-Sha'bi, from Abu Hurayrah, that the Messenger of Allah (may Allah bless him and grant him peace) said: "Whoever prays over a funeral, then for him is a qirat. And whoever waits until it is buried, then for him are two qirats." The qirat is like Uhud.