Etiquettes

Q: I want to know according to Hadith and Qur'an if a husband can eat wife's (half eaten or partially eaten or drunk) food or liquid?

Q: Is it OK to leave dirty dishes in the open at night? Also the bread that comes in its own bag left out at night?

Q: When having meals, is it fine to have the food and utensils placed on a sheet, whilst we sit on the carpet? Or is it necessary for there to be a sheet for the food and utensils and a separate sheet to sit on?

Q: Is eating with the head covered a Sunnat or mustahab?

Q: I know that gold and silk are haram for a man, but I heard that one cannot eat with utensils (spoons, forks, etc.) that are made of silver? Is it
impermissible for one to use spoons and forks that are made from silver?

Q: I wanted to know, is it sunnah not to drink whilst eating?A reference would be appreciated.

Q: It is sunnah to eat one meal a day. But the method of meal is (any of the regular occasions in a day when a reasonably large amount of food is eaten) and so in my breakfast I only eat a bowl of cereal or 2 toast with milk so is it considered a meal because it is less than lunch or dinner and it's not a reasonably large amount?

Q: I bought your book Sunnats where in chapter sunnat of eating it is written it is not makhruh in eating without a cap. I doubt whether it is a printing mistake.

Q: When eating the sunnat is '3 fingers'. Which fingers does this refer to, is the thumb counted as a finger or is it 4 fingers including the thumb.

Q: What are the Sunnah postures for eating?