Sunan Ibn Majah
3174
Sahih+2

It was narrated from ‘Aishah, the Mother of the Believers, that some people said:“O Messenger of Allah, some people bring us meat, and we do not know whether the Name of Allah has been mentioned over it or not.” He said: “Say: Bismillah and eat.’ They were new in Islam

SahihAl-Albani
SahihMuhammad Fouad Abd al-Baqi