Salam. As Muslims we all know about the importance of reading the Holy Qur'aan. If we were to give an exhaustive account of the benefits we would not be able to do justice to the topic. It is a contentious issue if one’s prayer may become void if they happen to glance at a verse of the Holy Qur'aan whilst praying Salah – but this is dependent on whether the individual praying salah merely glanced at the verse or intentionally reading it, thus breaking their Salah. The fast of the eye is to prevent it from seeing forbidden things, Zina (adultery, fornication) does not refer only to penetration, rather there is the Zina of the hand, which is touching that which is forbidden, and the zina of the eyes, which is looking at that which is forbidden, even though Zina that is committed with the private parts, is the Zina which is punishable with the hadd punishment. Read here: http://www.revisitingthesalaf.org/2015/04/sexual-ethics-during-prayers.html