+ full see post http://goo.gl/MXBom

Narrated Ibn 'Abbas: Allah's Apostle said, "If anyone of you, when intending to have a sexual relation (sleep) with his wife, says: Bismillah, Allahumma jannibna ashShaitan, waJannib ash-Shaitana ma razaqtana, Satan would never harm that child, should it be ordained that they will have one. (Because of that sleep)." (HADEES: BUKHARI)Volume 9, Book 93, Number 493:

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+ http://goo.gl/YtkQV
+ http://goo.gl/MXBom