Leviticus 9:17
And he brought the meat offering, and took an handful thereof, and burnt it upon the altar, beside the burnt sacrifice of the morning. And he brought the meat offering, and took an handful thereof, and burnt it upon the altar, beside the burnt sacrifice of the morning.
Aaron brought forward the grain offering, took a handful from it, and burned that portion on the altar over and above the regular morning burnt sacrifice. This was done on the eighth day of the priests' service, as part of the order of worship that God Himself had commanded. God showed His acceptance of the sacrifices by manifesting His glory, sending fire that consumed the offering upon the altar.