The word(s) "witnesses" appears 28 time(s) in 23 verse(s) in Quran in Muhammad Habib Shakir translation.

(11) And two of camels and two of cows. Say: Has He forbidden the two males or the two females or that which the wombs of the two females contain? Or were you witnesses when Allah enjoined you this? Who, then, is more unjust than he who forges a lie against Allah that he should lead astray men without knowledge? Surely Allah does not guide the unjust people.

(12) Say: Bring your witnesses who should bear witness that Allah has forbidden this, then if they bear witness, do not bear witness with them; and follow not the low desires of those who reject Our communications and of those who do not believe in the hereafter, and they make (others) equal to their Lord.

(13) 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.

(14) 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.

(15) I did not make them witnesses of the creation of the heavens and the earth, nor of the creation of their own souls; nor could I take those who lead (others) astray for aiders.

(16) And those who accuse free women then do not bring four witnesses, flog them, (giving) eighty stripes, and do not admit any evidence from them ever; and these it is that are the transgressors,

(17) And (as for) those who accuse their wives and have no witnesses except themselves, the evidence of one of these (should be taken) four times, bearing Allah to witness that he is most surely of the truthful ones.

(18) Why did they not bring four witnesses of it? But as they have not brought witnesses they are liars before Allah.

(19) And you were not on the western side when We revealed to Musa the commandment, and you were not among the witnesses;

(20) Or did We create the angels females while they were witnesses?