The word(s) "which" appears 609 time(s) in 551 verse(s) in Quran in Abdullah Yusuf Ali translation.

(431) "This:, it will be said, "Is the Fire,- which ye were wont to deny!

(432) Enjoying the (Bliss) which their Lord hath bestowed on them, and their Lord shall deliver them from the Penalty of the Fire.

(433) Or have they a ladder, by which they can (climb up to heaven and) listen (to its secrets)? Then let (such a) listener of theirs produce a manifest proof.

(434) The (Prophet's) (mind and) heart in no way falsified that which he saw.

(435) Near the Lote-tree beyond which none may pass:

(436) These are nothing but names which ye have devised,- ye and your fathers,- for which Allah has sent down no authority (whatever). They follow nothing but conjecture and what their own souls desire!- Even though there has already come to them Guidance from their Lord!

(437) Then which of the gifts of thy Lord, (O man,) wilt thou dispute about?

(438) Ah! they will know on the morrow, which is the liar, the insolent one!

(439) We sent against them a violent Tornado with showers of stones, (which destroyed them), except Lut's household: them We delivered by early Dawn,-

(440) Then which of the favours of your Lord will ye deny?