One may not give the poor at the thresh-ing floor less than a half-kav of wheat or a kav of barley; R' Meir says: A half-kav. A kav and-a-half of spelt and a kav of dried figs or a maneh of pressed figs; R' Akiva says: A pras. A half-log of wine; R' Akiva says: A quarter. A quarter [-log] of oil; R' Akiva says: An eighth. And all other fruits —- said Abba Shaul: Enough that he can sell them and buy with their proceeds food for two meals.