Imamat 6:13

6:13 A continual fire must be kept burning on the altar. It must not be extinguished.

Imamat 16:25

16:25 “Then he is to offer up the fat of the sin offering ¹  in smoke on the altar,

[16:25]  ¹ tn Heb “And the fat of the sin offering he is to offer up.”