Hadith #1276 (Sunan Ibn Majah)
Book: Chapters Regarding Funerals
Narrator(s): Hisham bin 'Ammar bin Nasayr هشام بن عمار بن نصير, Isma'il bin Ayyash bin Saleem إسماعيل بن عياش بن سليم, Thawban bin Bujdud, Uthman bin Muhammad, Zuhyr bin Salm al-Nsy زهير بن سالم العنسي بالنون

“When you see a funeral (procession) stand up for it until it has passed by or it is placed on the ground.”

Source: https://parallelquran.com/hadith/sunan-ibn-majah-1276/