"Sanctify to me all of the firstborn, whatever opens the womb among the children of Israel, both of man and of animal. It is mine."
TSK
TSK · Leviticus 27:26
Treasury of Scripture Knowledge references in WEB.
Exodus 13:2
TSK
Exodus 22:30
TSK
You shall do likewise with your cattle and with your sheep. Seven days it shall be with its mother, then on the eighth day you shall give it to me.
All the firstborn males that are born of your herd and of your flock you shall sanctify to Yahweh your God: you shall do no work with the firstborn of your herd, nor shear the firstborn of your flock.
Nehemiah 10:36
TSK
also the firstborn of our sons, and of our livestock, as it is written in the law, and the firstborn of our herds and of our flocks, to bring to the house of our God, to the priests who minister in the house of our God;