Leviticus 4:16

When the sin, which they have sinned against it, is known, then the congregation shall offer a young bullock for the sin, and bring him before the tabernacle of the congregation.

And the elders of the congregation shall lay their hands upon the head of the bullock before the LORD: and the bullock shall be killed before the LORD.

And the priest shall dip his finger [in some] of the blood, and sprinkle [it] seven times before the LORD, [even] before the vail.

And he shall put [some] of the blood upon the horns of the altar which [is] before the LORD, that [is] in the tabernacle of the congregation, and shall pour out all the blood at the bottom of the altar of the burnt offering, which [is at] the door of the tabernacle of the congregation.