Numbers 28:5

“Command the children of Israel, and tell them, ‘See that you present my offering, my food for my offerings made by fire, as a pleasant aroma to me, in their due season.’

You shall tell them, ‘This is the offering made by fire which you shall offer to the LORD: male lambs a year old without defect, two day by day, for a continual burnt offering.

You shall offer the one lamb in the morning, and you shall offer the other lamb at evening,

It is a continual burnt offering which was ordained in Mount Sinai for a pleasant aroma, an offering made by fire to the LORD.

Its drink offering shall be the fourth part of a hin for each lamb. You shall pour out a drink offering of strong drink to the LORD in the holy place.

The other lamb you shall offer at evening. As the meal offering of the morning, and as its drink offering, you shall offer it, an offering made by fire, for a pleasant aroma to the LORD.