In almost all instances, the Rebbe would issue the following blessing upon notification that a couple was expecting a child:
May G-d grant that your entire pregnancy proceed to a normal and easy completion, and that healthy and viable offspring be born full term of a regular and easy birth.
(Igros Kodesh, Vol. XXIV, p. 77 [109])
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Notes:
- (Back to text) Also in many other Igros Kodesh and written answers.