Jitsi ID from prosody

Can someone please help me to take the jitsi id from prosody when participants leave the meeting?

use event.occupant.jid on muc-occupant-left.
like jitsi-meet/mod_muc_breakout_rooms.lua at 0be0d6a76ec172972570029f5157b169576a9f52 · jitsi/jitsi-meet · GitHub

Thanks for your reply.

I got the jitsi_id .Next please guide me on how to take participant id from Prosody.