Travis Scott Sends Well Wishes to DMX as He Enters Day 4 on Life Support - TMZ

As we reported, hundreds -- including X's fiancee, kids and ex-wife -- attended a prayer vigil outside White Plains Hospital Monday night ...

it was an emotional event, with some attendees breaking down in tears during prayer.

The hospital has enforced a strict visiting policy because of COVID-19, and only X's fiancee, Desiree, mom, Arnett, and some of his kids -- who arrived Sunday and Monday -- have been able to see him on a limited basis.