The word(s) "add" appears 36 time(s) in 32 verse(s) in Quran in Mohsin Khan translation.

(21) See you not (O Muhammad صلى الله عليه وسلم) that Allah merges the night into the day (i.e. the decrease in the hours of the night are added to the hours of the day), and merges the day into the night (i.e. the decrease in the hours of day are added to the hours of night), and has subjected the sun and the moon, each running its course for a term appointed; and that Allah is All-Aware of what you do.

(22) And when the believers saw Al-Ahzab (the Confederates), they said: "This is what Allah and His Messenger (Muhammad صلى الله عليه وسلم) had promised us; and Allah and His Messenger (Muhammad صلى الله عليه وسلم) had spoken the truth. And it only added to their Faith and to their submissiveness (to Allah).

(23) He merges the night into the day (i.e. the decrease in the hours of the night is added to the hours of the day), and He merges the day into the night (i.e. the decrease in the hours of the day is added to the hours of the night). And He has subjected the sun and the moon: each runs its course for a term appointed. Such is Allah, your Lord; His is the kingdom. And those, whom you invoke or call upon instead of Him, own not even a Qitmir (the thin membrane over the date-stone).

(24) He it is Who has made you successors generations after generations in the earth, so whosoever disbelieves (in Islamic Monotheism) on him will be his disbelief. And the disbelief of the disbelievers adds nothing but hatred of their Lord. And the disbelief of the disbelievers adds nothing but loss.

(25) [Dawud (David)] said (immediately without listening to the opponent): "He has wronged you in demanding your ewe in addition to his ewes. And, verily, many partners oppress one another, except those who believe and do righteous good deeds, and they are few." And Dawud (David) guessed that We have tried him and he sought Forgiveness of his Lord, and he fell down prostrate and turned (to Allah) in repentance.

(26) They will say: "Our Lord! Whoever brought this upon us, add to him a double torment in the Fire!"

(27) Those who disbelieve will be addressed (at the time of entering the Fire): "Allah's aversion was greater towards you (in the worldly life when you used to reject the Faith) than your aversion towards one another (now in the Fire of Hell, as you are now enemies to one another), when you were called to the Faith but you used to refuse."

(28) And during a part of the night (also) glorify His praises (i.e. Maghrib and 'Isha prayers) and (so likewise) after the prayers [As-Sunnah, Nawafil - optional and additional prayers. And also glorify, praise and magnify Allah - Subhan Allah, Alhamdu lillah, Allahu-Akbar].

(29) He merges night into day (i.e. the decrease in the hours of the night is added into the hours of the day), and merges day into night (i.e. the decrease in the hours of the day is added into the hours of the night), and He has full knowledge of whatsoever is in the breasts.

(30) "But all my calling added nothing but to (their) flight (from the truth).