The word(s) "arm" appears 65 time(s) in 60 verse(s) in Quran in Muhammad Pickthal translation.

(51) It is not in their power to help them; but they (the worshippers) are unto them a host in arms.

(52) Here is an army rushing blindly with you. (Those who are already in the Fire say): No word of welcome for them. Lo! they will roast at the Fire.

(53) Why, then, have armlets of gold not been set upon him, or angels sent along with him?

(54) Lo! Conspiracy is only of the devil, that he may vex those who believe; but he can harm them not at all unless by Allah's leave. In Allah let believers put their trust.

(55) Who hath created seven heavens in harmony. Thou (Muhammad) canst see no fault in the Beneficent One's creation; then look again: Canst thou see any rifts?

(56) Or who is he that will be an army unto you to help you instead of the Beneficent? The disbelievers are in naught but illusion.

(57) And lo! whenever I call unto them that Thou mayst pardon them they thrust their fingers in their ears and cover themselves with their garments and persist (in their refusal) and magnify themselves in pride.

(58) See ye not how Allah hath created seven heavens in harmony,

(59) And we know not whether harm is boded unto all who are in the earth, or whether their Lord intendeth guidance for them.

(60) And send against them swarms of flying creatures,