50 Then Aaron returned to Moses at the entrance to the tent of meeting, for the plague had stopped.a

Read Numbers 16:50 Using Other Translations

And Aaron returned unto Moses unto the door of the tabernacle of the congregation: and the plague was stayed.
And Aaron returned to Moses at the entrance of the tent of meeting, when the plague was stopped.
Then because the plague had stopped, Aaron returned to Moses at the entrance of the Tabernacle.