The word(s) "proof" appears 241 time(s) in 235 verse(s) in Quran in Mohsin Khan translation.

(231) But those who disbelieved (in the Oneness of Allah - Islamic Monotheism) and denied Our Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.), they will be the dwellers of the Fire, to dwell therein forever. And worst indeed is that destination .

(232) Nay! Verily, he has been opposing Our Ayat (proofs, evidence, verses, lessons, signs, revelations).

(233) But they belied Our Ayat (proofs, evidence, verses, lessons, signs, revelations, and that which Our Prophet صلى الله عليه وسلم brought) completely.

(234) There is indeed in them (the above oaths) sufficient proofs for men of understanding (and that, they should avoid all kinds of sins and disbeliefs)!

(235) But those who disbelieved in Our Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.), they are those on the Left Hand (the dwellers of Hell).