Ezekiel 46:12

And if the ruler shall make a voluntary whole burnt offering of thanksgiving to the Lord, he may cause to be opened for himself the gate facing the east and make his whole burnt offering and his offerings of thanksgiving in the same manner as he doth on the day of the sabbaths. Then he shall go out, and after he is gone out he shall cause the gates to be shut.

And if the prince should prepare as a thanksgiving a whole-burnt-peace-offering to the Lord, and should open for himself the gate looking eastward, and offer his whole-burnt-offering, and his peace-offerings, as he does on the sabbath-day; then shall he go out, and shall shut the doors after he has gone out.