Exodus 12:4-6

New Revised Standard Version Catholic Edition

⁴ If a household is too small for a whole lamb, it shall join its closest neighbor in obtaining one; the lamb shall be divided in proportion to the number of people who eat of it. ⁵ Your lamb shall be without blemish, a year-old male; you may take it from the sheep or from the goats. ⁶ You shall keep it until the fourteenth day of this month; then the whole assembled congregation of Israel shall slaughter it at twilight.