Pseudo-Aug., in App. s. 123: He, who by a touch could heal the severed limbs of others, how much more could He, in His own birth, preserve whole that which He found whole? In this parturition, soundness of the Mother’s body was rather strengthened than weakened, and her virginity rather confirmed than lost.
I don't have the Book of Leo in my bible.
It is on my astrological chart, though. :>)