The word(s) "witness" appears 134 time(s) in 104 verse(s) in Quran in Muhammad Habib Shakir translation.

(41) Therefore Allah is sufficient as a witness between us and you that we were quite unaware of your serving (us).

(42) And if We show you something of what We threaten them with, or cause you to die, yet to Us is their return, and Allah is the bearer of witness to what they do.

(43) And you are not (engaged) in any affair, nor do you recite concerning it any portion of the Quran, nor do you do any work but We are witnesses over you when you enter into it, and there does not lie concealed from your Lord the weight of an atom in the earth or in the heaven, nor any thing less than that nor greater, but it is in a clear book.

(44) Though every sign should come to them, until they witness the painful chastisement.

(45) Is he then who has with him clear proof from his Lord, and a witness from Him recites it and before it (is) the Book of Musa, a guide and a mercy? These believe in it; and whoever of the (different) parties disbelieves in it, surely it is the truth from your Lord, but most men do not believe.

(46) And who is more unjust than he who forges a lie against Allah? These shall be brought before their Lord, and the witnesses shall say: These are they who lied against their Lord. Now surely the curse of Allah is on the unjust.

(47) We cannot say aught but that some of our gods have smitten you with evil. He said: Surely I call Allah to witness, and do you bear witness too, that I am clear of what you associate (with Allah).

(48) Most surely there is a sign in this for him who fears the chastisement of the hereafter; this is a day on which the people shall be gathered together and this is a day that shall be witnessed.

(49) He said: She sought to make me yield (to her); and a witness of her own family bore witness: If his shirt is rent from front, she speaks the truth and he is one of the liars:

(50) Go back to your father and say: O our father! surely your son committed theft, and we do not bear witness except to what we have known, and we could not keep watch over the unseen: