The word(s) "whereof" appears 55 time(s) in 53 verse(s) in Quran in Muhammad Pickthal translation.

(11) He said: O Noah! Lo! he is not of thy household; lo! he is of evil conduct, so ask not of Me that whereof thou hast no knowledge. I admonish thee lest thou be among the ignorant.

(12) He said: My Lord! Lo! in Thee do I seek refuge (from the sin) that I should ask of Thee that whereof I have no knowledge. Unless Thou forgive me and have mercy on me I shall be among the lost.

(13) And two young men went to prison with him. One of them said: I dreamed that I was pressing wine. The other said: I dreamed that I was carrying upon my head bread whereof the birds were eating. Announce unto us the interpretation, for we see thee of those good (at interpretation).

(14) And the cattle hath He created, whence ye have warm clothing and uses, and whereof ye eat;

(15) He hideth himself from the folk because of the evil of that whereof he hath had tidings, (asking himself): Shall he keep it in contempt, or bury it beneath the dust. Verily evil is their judgment.

(16) Glorified be He Who carried His servant by night from the Inviolable Place of Worship to the Far distant place of worship the neighbourhood whereof We have blessed, that We might show him of Our tokens! Lo! He, only He, is the Hearer, the Seer.

(17) (O man), follow not that whereof thou hast no knowledge. Lo! the hearing and the sight and the heart - of each of these it will be asked.

(18) Have they not seen that Allah Who created the heavens and the earth is Able to create the like of them, and hath appointed for them an end whereof there is no doubt? But the wrong-doers refuse aught save disbelief.

(19) (A thing) whereof they have no knowledge, nor (had) their fathers, Dreadful is the word that cometh out of their mouths. They speak naught but a lie.

(20) How canst thou bear with that whereof thou canst not compass any knowledge?