Shama-il Tirmidhi
Shama-il Tirmidhi Chapter 027, Hadith Number 006 (184).
Hadith Section/Book: Shama-il Tirmidhi Chapter 27. The Words That Of Rasoolullah Said Before and After Eating
Aayeshah Radiyallahu 'Anha relates that while Rasulullah Saliallahu aIayhi Wasallam and six of the Sahaabah were having meals, a badawi came. He ate all the food up in two bites. Rasulullah Sallallahu 'Alayhi Wasallam said: "If he had read 'Bismillah' it should have been sufficient for all."
Commentary
Because the badawi did not recite Bismillah, the shaytaan joined and finished everything. The barakah of the food vanished.