What are the words Prophet Muhammad (saw) said to protect a child from harm if spoken while intending to have sexual intercourse with one's spouse?
 Narrated Ibn `Abbas:                     The Prophet said, "If anyone of you, when intending to have a sexual intercourse with his wife, says: 'Bismillah, Allahumma jannibna-sh-shaitan, wa jannibi-sh-shaitan ma razaqtana,' and if the couple are destined to have a child (out of that very sexual relation), then Satan will never be able to harm that child."