This passage from the Christian gospel of Matthew reflects which of the Five Pillars of Islam?
So when you give to the needy, do not announce it with
trumpets, as the hypocrites do in the synagogues and on
the streets, to be honored by others. Truly I tell you, they
have received their reward in full. But when you give to the
needy, do not let your left hand know what your right hand
is doing, so that your giving may be in secret. Then your
Father, who sees what is done in secret, will reward you.
-Matthew 6:2-4