Musannaf Ibn Abi Shayba 21:690

Waki’ narrated to us, from Mis’ar, from ‘Amir ibn Shaqiq, from Abu Wa’il, who said: ‘Abdullah would not attend a gathering or a banquet without standing up to praise Allah and invoke blessings upon the Prophet, may Allah bless him and grant him peace. And if it were something that followed [a procession or a walk], he would seek out the most obscure place in the market, sit in it, praise Allah, and invoke blessings upon the Prophet, may Allah bless him and grant him peace.