The word(s) "train" appears 36 time(s) in 36 verse(s) in Quran in Abdullah Yusuf Ali translation.

(31) While the Unbelievers got up in their hearts heat and cant - the heat and cant of ignorance,- Allah sent down His Tranquillity to his Messenger and to the Believers, and made them stick close to the command of self-restraint; and well were they entitled to it and worthy of it. And Allah has full knowledge of all things.

(32) In them will be (Maidens), chaste, restraining their glances, whom no man or Jinn before them has touched;-

(33) Companions restrained (as to their glances), in (goodly) pavilions;-

(34) O ye who believe! When ye hold secret counsel, do it not for iniquity and hostility, and disobedience to the Prophet; but do it for righteousness and self-restraint; and fear Allah, to Whom ye shall be brought back.

(35) And for such as had entertained the fear of standing before their Lord's (tribunal) and had restrained (their) soul from lower desires,

(36) Then will he be of those who believe, and enjoin patience, (constancy, and self-restraint), and enjoin deeds of kindness and compassion.