The word(s) "silent" appears 2 time(s) in 2 verse(s) in Quran in Muhammad Pickthal translation.

(1) And if ye call them to the Guidance, they follow you not. Whether ye call them or are silent is all one for you.

(2) Say (unto mankind): Cry unto Allah, or cry unto the Beneficent, unto whichsoever ye cry (it is the same). His are the most beautiful names. And thou (Muhammad), be not loud-voiced in thy worship nor yet silent therein, but follow a way between.