Keeping the Feast of Unleavened Bread Without Appearing Empty-Handed

"You shall keep the feast of unleavened bread": by inference from another verse that says, "keep the month of the spring and offer the Passover" (Deuteronomy 16:1). One might think you make the Passover only at a time when you have the spring crop; from where do I learn even at a time when you do not have the spring crop? Scripture says, "you shall keep the feast of unleavened bread." Another interpretation: just as at the going out from Egypt, even though you had no spring crop there was only unleavened bread; from where do we learn to apply what is said of the Egyptian Passover to the Passover of later generations, and what is said of the Passover of later generations to the Egyptian Passover? "Seven days you shall eat unleavened bread as I commanded you" (Exodus 23:15): this teaches that the year in which Israel went out from Egypt was kept according to its proper order. "And none shall appear before Me empty": even from charity. "And none shall appear before Me empty": even with anything at all. But the Sages say: there is nothing less than a maah of silver for the burnt-offering of appearance, and two pieces of silver for the festival-offering.