“As you sow, so shall you reap” -Jesus?

Meaning
Your deeds, good or bad, will repay you in kind.
Origin
From the Bible, Galatians VI

used this pic in a post, thought it was nice and biblical
but after posting started thinking, wait a minute is it right?
did Jesus say that?

Galatians 6:7-8
Be not deceived; God is not mocked:
for whatsoever a man soweth, that shall he also reap.
For he that soweth to his flesh shall of the flesh reap corruption;
but he that soweth to the Spirit shall of the Spirit reap life everlasting.

Matthew 7
12 Therefore all things whatsoever ye would that men
should do to you, do ye even so to them:
for this is the law and the prophets.

17-20
Even so every good tree bringeth forth good fruit;
but a corrupt tree bringeth forth evil fruit.
A good tree cannot bring forth evil fruit,
neither can a corrupt tree bring forth good fruit.
Every tree that bringeth not forth good fruit is hewn down,
and cast into the fire.
Wherefore by their fruits ye shall know them.