Ezek 46:12

וְכִֽי־יַעֲשֶׂה֩ הַנָּשִׂ֨יא נְדָבָ֜ה עוֹלָ֣ה אֽוֹ־שְׁלָמִים֮ נְדָבָ֣ה לַֽיהוָה֒ וּפָ֣תַֽח ל֗וֹ אֶת הַשַּׁ֨עַר֙ הַפֹּנֶ֣ה קָדִ֔ים וְעָשָׂ֤ה אֶת־עֹֽלָתוֹ֙ וְאֶת־שְׁלָמָ֔יו כַּאֲשֶׁ֥ר יַעֲשֶׂ֖ה בְּי֣וֹם הַשַּׁבָּ֑ת וְיָצָ֛א וְסָגַ֥ר אֶת־הַשַּׁ֖עַר אַחֲרֵ֥י צֵאתֽוֹ׃

When the prince makes a freewill offering to the LORD, whether a burnt offering or a peace offering, the gate facing east must be opened for him. He is to offer his burnt offering or peace offering just as he does on the Sabbath day. Then he shall go out, and the gate must be closed after he goes out.