"It shall be perfect to be accepted"—Leviticus 22:21.
When offering a sacrifice, we are required to ensure that it is "complete"—devoid of any of the blemishes enumerated in the Torah (as well as those blemishes not written explicitly in the Torah, but included by Mosaic tradition).
The same is true regarding the wine libations and the oil and flour used in the meal offerings—they are to be of premium quality and free of any defect.
