This reading is from the special Torah reading for the first two days of Sukkot. The complete Torah reading for these days is Leviticus 22:26-23:44 and Numbers 29:12-16.
And from the day on which you bring the sheaf of elevation offering--the day after the sabbath--you shall count off seven weeks. They must be complete: you must count until the day after the seventh week--fifty days; then you shall bring an offering of new grain to the Lord. You shall bring from your settlements two loaves of bread as an elevation offering; each shall be made of two-tenths of a measure of choice flour, baked after leavening, as first fruits to the Lord. With the bread you shall present, as burnt offerings to the Lord, seven yearling lambs without blemish, one bull of the herd, and two rams, with their meal offerings and libations, an offering by fire of pleasing odor to the Lord.
You shall also offer one he-goat as a sin offering and two yearling lambs as a sacrifice of well-being. The priest shall elevate these--the two lambs--together with the bread of first fruits as an elevation offering before the Lord; they shall be holy to the Lord, for the priest. On that same day you shall hold a celebration; it shall be a sacred occasion for you; you shall not work at your occupations. This is a law for all time in all your settlements, throughout the ages. And when you reap the harvest of your land, you shall not reap all the way to the edges of your field, or gather the gleanings of your harvest; you shall leave them for the poor and the stranger: I the Lord am your God.