The word(s) "therein" appears 248 time(s) in 225 verse(s) in Quran in Mohsin Khan translation.

(171) And indeed We gave Musa (Moses) the Scripture, but dispute arose therein. And had it not been for a Word that went forth before from your Lord, (the torment would have overtaken them) and the matter would have been settled between them. But truly, they are in grave doubt thereto (i.e. about the Qur'an). [Tafsir Al-Qurtubi].

(172) Those who believe not therein seek to hasten it, while those who believe are fearful of it, and know that it is the very truth. Verily, those who dispute concerning the Hour are certainly in error far away.

(173) Who has made for you the earth like a bed, and has made for you roads therein, in order that you may find your way.

(174) And when the truth (this Qur'an) came to them, they (the disbelievers in this Qur'an) said: "This is magic, and we disbelieve therein."

(175) Trays of gold and cups will be passed round them; (there will be) therein all that inner-selves could desire, and all that eyes could delight in and you will abide therein forever.

(176) therein for you will be fruits in plenty, of which you will eat (as you desire).

(177) Verily, the Mujrimun (criminals, sinners, disbelievers) will be in the torment of Hell to abide therein forever.

(178) (The torment) will not be lightened for them, and they will be plunged into destruction with deep regrets, sorrows and in despair therein.

(179) therein (that night) is decreed every matter of ordainments.

(180) They will call therein for every kind of fruit in peace and security;