We did send messengers before thee, and appointed for them wives and children: and it was never the part of a messenger to bring a sign except as Allah permitted (or commanded). For each period is a Book (revealed). Allah doth blot out or confirm what He pleaseth: with Him is the Mother of the Book.

Al-Ra'ad:38-39

Once Allah's Apostle passed by an Ansari (man) who was admonishing to his brother regarding Haya'. On that Allah's Apostle said, "Leave him as Haya' is a part of faith."

Narrated 'Abdullah bin Umar

Detachment cannot be produced without faith and that faith cannot be completed without observation and the one who does not have detachment in him, he is more closely related to the material world (the lower degraded world) rather than to God.

Qalandar Baba Auliya