"Give Aaron and his sons this command: 'These are the regulations for the burnt offering1: The burnt offering is to remain on the altar hearth throughout the night, till morning, and the fire must be kept burning on the altar.2
References for Leviticus 6:9
The priest shall then put on his linen clothes,3 with linen undergarments next to his body,4 and shall remove the ashes5 of the burnt offering that the fire has consumed on the altar and place them beside the altar.
References for Leviticus 6:10
Then he is to take off these clothes and put on others, and carry the ashes outside the camp to a place that is ceremonially clean.6
References for Leviticus 6:11
The fire on the altar must be kept burning; it must not go out. Every morning the priest is to add firewood7 and arrange the burnt offering on the fire and burn the fat8 of the fellowship offerings9 on it.
References for Leviticus 6:12
The fire must be kept burning on the altar continuously; it must not go out.