What is the wisdom behind slaughtering the hadiy in the Haram

A boy died and had not done Hajj; can Hajj be done on his behalf?

Is it permissible for two people to do ‘umrah on behalf of one deceased person at the same time?

Is an impediment that it is hoped will pass regarded as an excuse that makes it permissible to exit ihram during Hajj, for one who stipulated a condition when entering ihram?

He has a home in Jeddah and he went back to it before doing tawaaf al-ifaadah and tawaaf al-wadaa‘, to wait until the crowds grew less. What must he do?

Is it permissible for a woman in ihram to wear medical gloves in the case of necessity?

They did not carry out their father’s last wishes, and the ruling on doing Hajj before execution of the will

He did Hajj tamattu‘ with the people, but he did not have the intention of doing ‘umrah from the outset; what is the ruling?

Is it mustahabb for everyone who wants to enter ihram for Hajj or ‘Umrah to stipulate a condition?

Can the pilgrim remove something from his hair if he wants to offer an udhiyah?