Respected Sir/ Madam,
Most humbly, I would like to state that my name is ________ (name) and my employee ID is ______ (ID).
This is to bring to your kind notice that recently it has come to my knowledge that my ______ (friend/ family member) is admitted to the hospital due to ________ (accident/ illness/ reason). So, I have to travel to ______ (location) to manage the situation and extend support.
Kindly, allow me to take emergency leave till __/__/____(date). I hope that you will support me in this emergency situation and do the needful. If needed, you can contact me at the contact details mentioned below.
_________ (Contact details)