The word(s) "ain" appears 1028 time(s) in 880 verse(s) in Quran in Abdullah Yusuf Ali translation.

(831) And We have set none but angels as Guardians of the Fire; and We have fixed their number only as a trial for Unbelievers,- in order that the People of the Book may arrive at certainty, and the Believers may increase in Faith,- and that no doubts may be left for the People of the Book and the Believers, and that those in whose hearts is a disease and the Unbelievers may say, "What symbol doth Allah intend by this?" Thus doth Allah leave to stray whom He pleaseth, and guide whom He pleaseth: and none can know the forces of thy Lord, except He and this is no other than a warning to mankind.

(832) "But we used to talk vanities with vain talkers;

(833) "Until there came to us (the Hour) that is certain."

(834) Nay, man will be evidence against himself,

(835) Nay more, it is for Us to explain it (and make it clear):

(836) Again, Woe to thee, (O men!), yea, woe!

(837) For the Rejecters we have prepared chains, yokes, and a blazing Fire.

(838) A Fountain where the Devotees of Allah do drink, making it flow in unstinted abundance.

(839) A fountain there, called Salsabil.

(840) When the mountains are scattered (to the winds) as dust;