Matthew 12:11

Overview - Matthew 12
Christ reproves the blindness of the Pharisees concerning the breach of the sabbath,
by scripture,
by reason,
13 and by a miracle.
22 He heals a man possessed that was blind and dumb;
24 and confuting the absurd charge of casting out devils by Beelzebub, he shows that blasphemy against the Holy Ghost shall never be forgiven.
36 Account shall be made of idle words.
38 He rebukes the unfaithful, who seek after a sign,
46 and shows who is his brother, sister, and mother.
Treasury of Scripture Knowledge

Matthew 12:11  (King James Version)
And he said unto them, What man shall there be among you, that shall have one sheep, and if it fall into a pit on the sabbath day, will he not lay hold on it, and lift it out?

This was an {argumentum ad hominem.} The Jews held that such things were lawful on the sabbath day, and our Saviour very properly appealed to their canons in vindication of his intention to heal the distressed man.
Luke 13:15-17 ; 14:5

and if
Exodus 23:4 Exodus 23:5 ; Deuteronomy 22:4