1Cor 9:8-9 | ESV | STEP | Do I say these things on human authority? Does not the Law say the same ?

1 Corinthians 9:8-9

8 Do I say these things on human authority? Does not the Law say the same? 9 For it is written in the Law of Moses, ^a“You shall not muzzle an ox when it treads out the grain.” Is it for oxen that God is concerned?