Bulugh al-Maram, Book 12, Hadith 1376 (English)

'Aishah (RAA) narrated, 'Some people said to Allah's Messenger, There are people who bring us meat and we do not know whether or not they have mentioned Allah's name over it.' He replied, "Mention Allah's name yourselves and eat it." Related by Al-Bukhari.

وَعَنْ عَائِشَةَ رَضِيَ اَللَّهُ عَنْهَا; { أَنَّ قَوْمًا قَالُوا لِلنَّبِيِّ ‏- صلى الله عليه وسلم ‏-إِنَّ قَوْماً يَأْتُونَنَا بِاللَّحْمِ, لَا نَدْرِي أَذُكِرَ اِسْمُ اَللَّهِ عَلَيْهِ أَمْ لَا? فَقَالَ: " سَمُّوا اَللَّهَ عَلَيْهِ أَنْتُمْ, وَكُلُوهُ" } رَوَاهُ اَلْبُخَارِيُّ (1750)‏.‏ ‏2 ‏- صحيح.‏ رواه البخاري ( 5507 )‏.‏

sunnah.com

also referenced under: Book 12, Hadith 1336 (In-Book)