Sunan Ibn Majah
1540
Sahih+3

It was narrated from Thawban that the Messenger of Allah (ﷺ) said:“Whoever offers the funeral prayer will have one Qirat and whoever attends the burial will have two Qirat.” The Prophet (ﷺ) was asked about the Qirat and he said: “(It is) like Uhud.”

SahihAl-Albani
SahihMuhammad Fouad Abd al-Baqi