The word(s) "whichever" appears 2 time(s) in 2 verse(s) in Quran in Mohsin Khan translation.

(1) And Allah puts forward (another) example of two men, one of them dumb, who has no power over anything (disbeliever), and he is a burden on his master; whichever way he directs him, he brings no good. Is such a man equal to one (believer in the Islamic Monotheism) who commands justice, and is himself on the Straight Path?

(سورة النحل, An-Nahl, Chapter #16, Verse #76)
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(2) He [Musa (Moses)] said: "That (is settled) between me and you: whichever of the two terms I fulfil, there will be no injustice to me, and Allah is Surety over what we say."

(سورة القصص, Al-Qasas, Chapter #28, Verse #28)
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