Jami at-Tirmidhi 1858
Jami at-Tirmidhi · Book 25: The Book on Food · What Has Been Related About The Tasmiyah Over Food
It is narrated with this chain of narration, from 'Aishah who said:
وَبِهَذَا الإِسْنَادِ عَنْ عَائِشَةَ ، قَالَتْ كَانَ النَّبِيُّ صلى الله عليه وسلم يَأْكُلُ طَعَامًا فِي سِتَّةٍ مِنْ أَصْحَابِهِ فَجَاءَ أَعْرَابِيٌّ فَأَكَلَهُ بِلُقْمَتَيْنِ فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " أَمَا إِنَّهُ لَوْ سَمَّى لَكَفَاكُمْ " . قَالَ أَبُو عِيسَى هَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ . وَأُمُّ كُلْثُومٍ هِيَ بِنْتُ مُحَمَّدِ بْنِ أَبِي بَكْرٍ الصِّدِّيقِ رَضِيَ اللَّهُ عَنْهُ .
"The Prophet (ﷺ) was eating food with six of his Companions. A Bedouin came and ate it in two mouthfuls. So the Messenger of Allah (ﷺ) said: "As for him, had he mentioned (Allah's Name), it would have been enough for all of you." [Abu 'Eisa said:] This Hadith is Hasan Sahih. Umm Kulthum is the daughter of Muhammad bin Abi Bakr As-Siddiq, may Allah be pleased with them.
Grade: Sahih (Darussalam)