I come out of the earth, I am sold in the market. He who buys me cuts my tail, takes off my suit of silk, and weeps beside me when I am dead. What am I?

“A carrot”

While a carrot also comes out of the earth and is sold in the market, it does not have a tail or a suit of silk that is removed, and it does not typically cause weeping.

“A potato”

Although potatoes come out of the earth and are sold in the market, they do not have a tail, nor do they have a suit of silk, and they do not make people weep when prepared.

“A mushroom”

Mushrooms grow from the ground and are sold in markets, but they lack a tail and a suit of silk, and they do not cause weeping in the same way that onions do.