well we don't know who this baby was in his previous life, he could have been a murderer or a rapist. so according to his karams he recieved this action
in giani thakur singh's katha he says when guru gobind singh ji created khalsa he also called everyone from sachkand to take amrit. everyone did, from my understanding i think now only someone who has taken amrit can go to sachkand.
heres the link to katha
I need help naming many of the brahmgianis. I can only name baba gurbachan singh ji, sant baba isher singh ji rara sahib wale, sant baba isher singh ji kaleran wwale