If a baby in the womb of the mother is told that the area outside your world ( womb of the mother) is million times bigger than your world, there are huge mountains, sky scraper buildings, huge oceans etc, the child will not comprehend the reality of the world outside the womb.
We all came out from the wombs of our mothers and witnessed the reality of that big world outside the womb. Likewise, the Hereafter will soon be a reality for us.
Hazrath Mufti Ebrahim Desai Saheb (Damat Barakatuhum) further explained, how ever the child is formed in the womb of the mother; the child will live with that in the world. If there are abnormalities in the child in the womb, eg. blind, deaf, etc, the child will live with those abnormalities in this world.
Similarly, if there are any defects in our Aqeeda and A’maal, it will reflect accordingly in the Hereafter. The physical abnormalities in a person is nothing in comparison to defects in our Aqeeda and A’maal.