וּבְשַׂ֗ר זֶ֚בַח תּוֹדַ֣ת שְׁלָמָ֔יו בְּי֥וֹם קָרְבָּנ֖וֹ יֵאָכֵ֑ל לֹֽא־יַנִּ֥יחַ מִמֶּ֖נּוּ עַד־בֹּֽקֶר׃
And the flesh of the sacrifice of his peace-offerings for thanksgiving shall be eaten on the day of his offering; he shall not leave any of it until the morning.
Read kabbalistic (mystical) interpretation of Leviticus 7:15: and classical mystical sources.