Blessings of Food
Hadith (Sayings and Traditions of the Prophet Muhammad peace be upon him)
Salmaan al-Faarisii radiyallahu `anhu narrated:
I read in the Tawraah that the blessings of food lie in washing after eating. I spoke to Rasulullaah sallallahu `alayhi wa sallam and mentioned to him what I had read in the Tawraah. He responded, “The blessings of food lie in washing before and washing after eating.”
The Ulama have explained that the blessings of washing before eating means an increase in food and satisfaction from hunger. The blessings of washing after eating mean the benefits and intentions of eating are fulfilled i.e. it becomes part of the body, creates energy and stamina, assists in strengthening one to perform acts of worship and to possess good manners.
Ash-Shamaail lit-Tirmizii, Chapter on the ablution of Rasulullah sallallahu `alayhi wa sallam.