Prophet Muhammad (ﷺ) defined the true Muslim as one who avoids harming others with his tongue (words) and hand (actions).
This is an encouragement to speak what is good and beneficial; at the same time it is a warning, cautioning us to be careful in what we say, lest we say something that is harmful or false.When we have nothing beneficial to say, silence is golden.
It is part of a Muslim’s faith to speak the truth and to say things that bring about benefit to others.
a Good Word like a Good Tree :
( the example of a good word like a good tree, whose root is firmly fixed and its branches high in the sky. the example of a bad word is like a bad tree, uprooted from the surface of the earth, not having any stability ).
Best Muslim is the one from whose tongue and hand the people are safe.