Learn to be quiet just as you learn to talk, because if talking guides you, being quiet protects you. By being quiet, you attain two characteristics: you are able to take knowledge from those more knowledgeable than you, and you are able to repel the ignorance of those more ignorant than you.

And help one another in goodness and piety, and do not help one another in sin and aggression; and be careful of (your duty to) Allah; surely Allah is severe in requiting (evil).