The word(s) "which" appears 958 time(s) in 806 verse(s) in Quran in Muhammad Pickthal translation.

(671) Or have they any stairway (unto heaven) by means of which they overhear (decrees). Then let their listener produce some warrant manifest!

(672) Then let them be (O Muhammad), till they meet their day, in which they will be thunder-stricken,

(673) A day in which their guile will naught avail them, nor will they be helped.

(674) which one of mighty powers hath taught him,

(675) And He revealed unto His slave that which He revealed.

(676) Nigh unto which is the Garden of Abode.

(677) When that which shroudeth did enshroud the lote-tree,

(678) They are but names which ye have named, ye and your fathers, for which Allah hath revealed no warrant. They follow but a guess and that which (they) themselves desire. And now the guidance from their Lord hath come unto them.

(679) And unto Allah belongeth whatsoever is in the heavens and whatsoever is in the earth, that He may reward those who do evil with that which they have done, and reward those who do good with goodness.

(680) And that man hath only that for which he maketh effort,