In this example one parent would be coming to Canada with the child’s passport and sending passport to be stamped in Ottawa (if they are given permission to do so). Then they’d send the passport back to India. I was not aware that that is illegal in India so not an option.May be sending passport out of India can be acceptable looking at current situation but its not recommended in normal situation. Similarly as Canadian PR card is not mailed out of Canada considering the importance of this document.