Shama-il Tirmidhi Chapter 027, Hadith Number 005 (183).
Abu Umaamah Radiyallahu-'Anhu says: "When the dastarkhaan (table cloth) was being removed in the presence of Rasulullah Sallailahu 'Alayhi Wasallam, Rasulullah Saliallahu 'Alayhi Wasallam recited this du'aa:
Alhamdulillaahi hamdan kathiran tayyiban mubaarakan fihi-ghayra mu-wadda-in wa-laa mus-taghnan 'anhu rabbuna.
Praise be to Allah, abundant, excellent, blessed praise! Unceasing, never parting, indispensable (praise), Lord of us".