Leviticus 22:28

A cow, or sheep it and its young shall ye not slaughter in one day.

Deuteronomy 22:6-7

If a bird's nest chance to be before thee in the way, in any tree, or upon the ground, with young or with 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 Jehovah thy God. Thou shalt not boil a kid in its mother's milk.

Exodus 34:26

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

Deuteronomy 14:21

Ye shall eat of no carcase; thou shalt give it unto the stranger that is within thy gates, that he may eat it, or sell it unto a foreigner; for thou art a holy people to Jehovah thy God. Thou shalt not boil a kid in its 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 Jehovah thy God. Thou shalt not boil a kid in its mother's milk.
Exodus 34:26
The first of the first-fruits of thy land shalt thou bring into the house of Jehovah thy God. Thou shalt not boil a kid in its mother's milk.
Deuteronomy 14:21
Ye shall eat of no carcase; thou shalt give it unto the stranger that is within thy gates, that he may eat it, or sell it unto a foreigner; for thou art a holy people to Jehovah thy God. Thou shalt not boil a kid in its mother's milk.
Deuteronomy 22:6
If a bird's nest chance to be before thee in the way, in any tree, or upon the ground, with young or with eggs, and the dam sitting upon the young or upon the eggs, thou shalt not take the dam with the young: