The word(s) "perceive" appears 28 time(s) in 28 verse(s) in Quran in Mohsin Khan translation.

(21) And they ask you to hasten on the torment (for them): and had it not been for a term appointed, the torment would certainly have come to them. And surely, it will come upon them suddenly while they perceive not!

(22) Did we take them as an object of mockery, or have (our) eyes failed to perceive them?"

(23) Those before them belied, and so the torment came on them from directions they perceived not.

(24) "And follow the best of that which is sent down to you from your Lord (i.e. this Qur'an, do what it orders you to do and keep away from what it forbids), before the torment comes on you suddenly while you perceive not!"

(25) And those whom they used to invoke before (in this world) shall disappear from them, and they will perceive that they have no place of refuge (from Allah's punishment).

(26) Do they only wait for the Hour that it shall come upon them suddenly, while they perceive not?

(27) O you who believe! Raise not your voices above the voice of the Prophet (صلى الله عليه وسلم), nor speak aloud to him in talk as you speak aloud to one another, lest your deeds should be rendered fruitless while you perceive not.

(28) Then leave Me Alone with such as belie this Qur'an. We shall punish them gradually from directions they perceive not.