Ibn Majah

´It was narrated from 'Abdullah bin 'Amr:` that the Prophet said: “When anyone of you gets a new wife, a servant, or an animal, let him take hold of the forelock and say: Allahumma inni as`aluka min khayriha wa khayri ma jubilat 'alaihi, wa 'audhu bika min sharriha wa sharri ma jubilat `alaih (O Allah, I ask You for the goodness within her and the goodness that she is inclined towards, and I seek refuge with you from the evil to which she is inclined).' ”

´It was narrated from Ibn `Abbas:` that the Prophet said: “When anyone of you has intercourse with his wife, let him say: Allahumma jannibnish-Shaitana wa jannibish-Shaitana ma razaqtani (O Allah, keep Satan away from me and keep Satan away from that with which You bless me).' Then if they have a child, Allah will never allow Satan to gain control over him or he will never harm him.”