Leviticus 7:15

ובשר זבח תורת שלמיו AND THE FLESH OF THE SACRIFICE OF THE PEACE OFFERING FOR ACKNOWLEDGEMENT [SHALL BE EATEN THE SAME DAY] — There are here many apparently redundant words (רבויין); they are intended to include in this law the sin-offering, the guilt-offering, the Nazarite’s ram and the חגיגה (the festive offering of the pilgrims) brought on the fourteenth of Nisan — that these should be eaten only during one day (the day of slaughtering) and the following night, just as the תודה, and not two days and the intervening night as is the period assigned for שלמים - Sifra, Tzav, Chapter 12 1; Zevachim 36a) ביום קרבנו יאכל [AND THE FLESH …] SHALL BE EATEN ON THE DAY THAT HIS OFFERING IS EATEN — and as the period prescribed for eating its flesh is the period during which its bread may be eaten (Sifra, Tzav, Chapter 12 1). לא יניח ממנו עד בקר HE SHALL NOT LEAVE ANY OF IT TILL THE MORNING, but during the whole night he may eat of it. But if this be so why have they (the Rabbis) said, (Zevachim 55a) “The sacrifice of acknowledgement etc. … may only be eaten during the day and the following night till midnight”? As a precaution to keep people far from the possibility of sinning (cf. Berakhot 2a).

וּבְשַׂ֗ר זֶ֚בַח תּוֹדַ֣ת שְׁלָמָ֔יו בְּי֥וֹם קׇרְבָּנ֖וֹ יֵאָכֵ֑ל לֹֽא־יַנִּ֥יחַ מִמֶּ֖נּוּ עַד־בֹּֽקֶר׃

And the flesh of the sacrifice of his peace offering for thanksgiving shall be eaten the same day that it is offered; he shall not leave any of it until the morning.