Every firstling of an ass thou shalt redeem,.... This goes along with the former, Exodus 13:13:
and none shall appear before me empty; at the grand festivals, the passover, pentecost, and tabernacles, Exodus 13:15.
Related Commentaries of Exodus 34:20
Exodus 34:20
20 But the firstling of an ass thou shalt redeem with a lamb:c and if thou redeem him not, then shalt thou break his neck. All the firstborn of thy sons thou shalt redeem. And none shall appear before me empty.