Ezekiel 46:2; Ezekiel 46:12

2 The prince shall enter by the vestibule of the gate from outside, and shall take his stand by the post of the gate. The priests shall offer his burnt offering and his peace offerings, and he shall worship at the threshold of the gate. Then he shall go out, but the gate shall not be shut until evening.

12 When the prince provides a freewill offering, either a burnt offering or peace offerings as a freewill offering to the LORD, the gate facing east shall be opened for him. And he shall offer his burnt offering or his peace offerings as he does on the Sabbath day. Then he shall go out, and after he has gone out the gate shall be shut.