It is reported in the Masnad that Allah’s Messenger (Peace be upon him) said:
“The human being has never filled a container worse than his stomach.
Hence, it will be sufficient for the son of Adam to satisfy his hunger with a few bites to strengthen his backbone.
If he must eat his fill then he should allow for one third food, one third water, and third air.”
Sunnahs Before and During Eating
1- Mentioning Allah’s name. (Saying: in the name of Allah).
2- Using the right hand.
3- Eating from what is (placed) in front of the eater.
These Sunnahs are gathered in this hadith: (O boy, mention Allah’s name, use your right hand and eat from what is (placed) in front of you). Narrated by Muslim.
4- you may clean the food, if it falls, and then eat it:the hadith (if a bite falls from anyone of you, he should rub the dirt off it, then eat it…). Narrated by Muslim.
5- If eating with your hand, Use three fingers in eating: (The Prophet used to eat using three fingers) narrated by Muslim. This is what The beloved Prophet ,often, did and this is better, except when necessary.
6- If you are sitting, the way one sits while eating: kneeling on his knees and the upper face of his feet, or extending the right leg and sitting on the left one, this is the preferable as stated by Al-Hafedh in “Al-Fat’h”.
Sunnahs after eating:
1- If you are eating with your hand , you may wipe the dish with your fingers and lick them. the
beloved Prophet said: (you do not know in which of them the blessing lies).
2- Praising Allah after eating: (Allah is satisfied with the slave, who eats a meal, then praises Him for it), narrated by Muslim. One of the Prophet’s supplications after eating: (All praise is to Allah, Who Has fed me and provided me with this without any strength or power on my part).
The fruit of this supplication: (all his precedent sins are forgiven), It is sound Hadith.