"And Moses said: Eat it today. For it is Sabbath today. Today you shall not find it in the field": R. Zrika said: From here (we learn to eat) three meals on the Sabbath. "And Moses said: Eat it today, etc.": R. Yehoshua says: If you merit observing the Sabbath, the Holy One Blessed be He is destined to give you three festivals: Pesach, Atzereth (Shavuoth) and Succoth. Thus, "Eat it today, etc." ("Eat it today," followed by [26] "Six days shall you gather it":)