Leviticus 22:27
"Whenever a bull, a sheep, or a goat is born, it is to remain for seven days under the care of its mother. But on the eighth day onwards, it may be accepted as an offering made by fire to the LORD.
Exodus 22:30
You are to do the same with your oxen and your sheep. They shall be with their mother for seven days and then on the eighth day you are to give them to me.
Leviticus 12:2-3
"Tell the Israelis that a woman who conceives and bears a son is unclean for seven days. Just like the days of her menstruation, she is unclean.
Leviticus 19:23-24
"When you have entered the land and planted all sorts of trees for food, regard its fruit as uncircumcised for the first three years for you. It is not to be eaten.
Leviticus 22:25
A resident alien is not to offer as food to your God any of these items, because they are afflicted with ritual corruption due to their defects. They're not acceptable for you."