Would someone please give the citation for this proposition?
When I was GUESSING at what Kosta meant, I thought it could have been along the lines of:
Num. 4:15 : "After Aaron and his sons have finished covering the holy furnishings and all the holy articles, and when the camp is ready to move, the Kohathites are to come to do the carrying. But they must not touch the holy things or they will die. The Kohathites are to carry those things that are in the Tent of Meeting.
We saw what happened to Uzzah after touching the Ark in 2 Samuel 6:6-7. I thought maybe Kosta was implying that the reason for God's reaction was a desecration of the holy thing. But I was just speculating. In any event, I don't see how this could possibly apply to a person, especially Mary (or Jesus for that matter). It's not possible that both never embraced, hugged, kissed, another for their entire lives. For one thing we know that Jesus invited Thomas to touch Him. We also have 1 John 1:1. There must be many more examples.
Maybe Joseph accidentally touched Mary and died and that is why he wasn't mentioned after the incident when Jesus was 12. And maybe Jesus wore gloves when he healed people. And maybe Thomas didn't actually touch Jesus, maybe he put his hand in the holes. Maybe the holes were big enough or maybe Thomas had on surgical gloves.
Speculation is so much fun when you don't have to prove it up by scripture.
It applies to Mary's womb. As I said, where God dwells in Person is Holy of Holies. In order for her to have other children, that Holy of Holies would have to be occupied by ordinary humans.
"Touching that which is holy would desecrate it"
Touching does not desecrate the holy, that which touches the holy, itself becomes consecrated and must die. Look at Joshua 6:19 and what happened to Achan and Ussah. Jesus' holiness was veiled in His incarnation, Phil. 2:6-9, "Who, being in the form of God, thought it not robbery to be equal with God: But made himself of no reputation, and took upon him the form of a servant, and was made in the likeness of men: And being found in fashion as a man, he humbled himself, and became obedient unto death, even the death of the cross."