The word(s) "qaf" appears 4 time(s) in 3 verse(s) in Quran in Mohsin Khan translation.

(1) 'Ain-Sin-qaf. [These letters are one of the miracles of the Qur'an, and none but Allah (Alone) knows their meanings].

(2) And remember (Hud) the brother of 'Ad, when he warned his people in Al-Ahqaf (the curved sand-hills in the southern part of Arabian Peninsula). And surely, there have passed away warners before him and after him (saying): "Worship none but Allah; truly, I fear for you the torment of a mighty Day (i.e. the Day of Resurrection)."

(3) qaf. [These letters (qaf, etc.) are one of the miracles of the Qur'an, and none but Allah (Alone) knows their meanings]. By the Glorious Qur'an.