Riyad as-SalihinChapter 2Hadith 53
Full Sharh — Riyad as-Salihin 53
وعن عائشة رضى الله عنها قالت: كان رسول الله صلى الله عليه وسلم يأكل طعاماً في ستة من أصحابه، فجاء أعرابى، فأكله بلقمتين. فقال رسول الله صلى الله عليه وسلم "أما إنه لو سمى لكفاكم".((رواه الترمذي))
English Translation
'Aishah (May Allah be pleased with her) reported:: The Messenger of Allah (ﷺ) was eating with his six Companions when a desert Arab came and ate up the food in two mouthfuls. Messenger of Allah (ﷺ) said, "Had he mentioned the Name of Allah, it would have sufficed for all of you.".
Source
Riyad as-Salihin(رياض الصالحين)
The Book About the Etiquette of Eating
Hadith Number
53