I've noticed that there are certain foods that we must not eat during Amavasya days.
I've been told that foods like onion and garlic and certain other foods should be avoided.
But some people tell different reasons and others tell different reasons.
People tell like:
We must not eat onion and other certain items on that day because they induce sexual feelings.
We must not eat onion and those other items because they are grown underground. So, we must not eat foods that are grown under the ground.
We must not eat outside food at all.
Can someone tell me the actual reason on why those foods are avoided on Ammavasya days and which other days it should be avoided?
Suppose my father performs Ammavasya Tharpanam, can I eat outside food?