The word(s) "illa" appears 62 time(s) in 59 verse(s) in Quran in Mohsin Khan translation.

(21) Thus have We sent you (O Muhammad صلى الله عليه و سلم) to a community before whom other communities have passed away, in order that you might recite unto them what We have revealed to you, while they disbelieve in the Most Gracious (Allah) Say: "He is my Lord! La ilaha illa Huwa (none has the right to be worshipped but He)! In Him is my trust, and to Him will be my return with repentance."

(22) He sends down the angels with the Ruh (revelation) of His Command to whom of His slaves He wills (saying): "Warn mankind that La ilaha illa Ana (none has the right to be worshipped but I), so fear Me (by abstaining from sins and evil deeds).

(23) And We have put coverings over their hearts lest they should understand it (the Qur'an), and in their ears deafness. And when you make mention of your Lord Alone [La ilaha illallah (none has the right to be worshipped but Allah) Islamic Monotheism (توحيد الله)] in the Qur'an, they turn on their backs, fleeing in extreme dislike.

(24) There (on the Day of Resurrection), Al-Walayah (protection, power, authority and kingdom) will be for Allah (Alone), the True God. He (Allah) is the Best for reward and the Best for the final end. (La ilaha illallah- none has the right to be worshipped but Allah).

(25) Allah! La ilaha illa Huwa (none has the right to be worshipped but He)! To Him belong the Best Names.

(26) "Verily! I am Allah! La ilaha illa Ana (none has the right to be worshipped but I), so worship Me, and perform As-Salat (Iqamat-as-Salat) for My Remembrance.

(27) Your Ilah (God) is only Allah, (the One) La ilaha illa Huwa (none has the right to be worshipped but He). He has full knowledge of all things.

(28) And We did not send any Messenger before you (O Muhammad صلى الله عليه وسلم) but We revealed to him (saying): La ilaha illa Ana [none has the right to be worshipped but I (Allah)], so worship Me (Alone and none else)."

(29) And (remember) Dhun-Nun (Jonah), when he went off in anger, and imagined that We shall not punish him (i.e. the calamities which had befallen him)! But he cried through the darkness (saying): La ilaha illa Anta [none has the right to be worshipped but You (O, Allah)], Glorified (and Exalted) be You [above all that (evil) they associate with You]! Truly, I have been of the wrong-doers."

(30) And they are guided (in this world) unto goodly speech (i.e. La ilaha illallah, Alhamdu lillah, recitation of the Qur'an, etc.) and they are guided to the Path of Him (i.e. Allah's religion of Islamic Monotheism), Who is Worthy of all praises.