Leviticus 22:28

And whether it is cow, or ewe, ye shall not kill it and her young both in one day.

Deuteronomy 22:6-7

If a bird's nest shall chance to be before thee in the way on any tree, or on the ground, whether with young ones, or eggs, and the dam sitting upon the young, or upon the eggs, thou shalt not take the dam with the young:

Exodus 23:19

The first of the first-fruits of thy land thou shalt bring into the house of the LORD thy God. Thou shalt not seethe a kid in his mother's milk.

Exodus 34:26

The first of the first-fruits of thy land thou shalt bring to the house of the LORD thy God. Thou shalt not seethe a kid in his mother's milk.

Deuteronomy 14:21

Ye shall not eat of any thing that dieth of itself: thou shalt give it to the stranger that is in thy gates, that he may eat it; or thou mayest sell it to an alien: for thou art a holy people to the LORD thy God. Thou shalt not seethe a kid in his mother's milk.

Treasury of Scripture Knowledge

Summary

And whether it be cow or ewe, ye shall not kill it and her young both in one day.

Bible References

Ye shall not kill it

Exodus 23:19
The first of the first-fruits of thy land thou shalt bring into the house of the LORD thy God. Thou shalt not seethe a kid in his mother's milk.
Exodus 34:26
The first of the first-fruits of thy land thou shalt bring to the house of the LORD thy God. Thou shalt not seethe a kid in his mother's milk.
Deuteronomy 14:21
Ye shall not eat of any thing that dieth of itself: thou shalt give it to the stranger that is in thy gates, that he may eat it; or thou mayest sell it to an alien: for thou art a holy people to the LORD thy God. Thou shalt not seethe a kid in his mother's milk.
Deuteronomy 22:6
If a bird's nest shall chance to be before thee in the way on any tree, or on the ground, whether with young ones, or eggs, and the dam sitting upon the young, or upon the eggs, thou shalt not take the dam with the young: