Eating Sunnah and Manners
The Prophet (peace and blessings be upon him) once told `Ali ibn Abi Talib (may Allah be pleased with him), “O Ali! There are twelve rules a Muslim must learn to adhere to before the table (of food), four of which are duties, four of which are Sunnah, and four of which are manners. Knowing what you eat and its source, mentioning Allah’s name prior to eating, being grateful for provisions, and being content with them are duties. Sitting on the left foot, eating with three fingers, eating from the food closer to you, and licking the fingers (used while eating) are Sunnah. Restricting the size of each mouthful of food, chewing very well, refraining from looking people in the face, and washing the hands (afterwards) are of manners.”