בְּי֧וֹם זִבְחֲכֶ֛ם יֵאָכֵ֖ל וּמִֽמָּחֳרָ֑ת וְהַנּוֹתָר֙ עַד־י֣וֹם הַשְּׁלִישִׁ֔י בָּאֵ֖שׁ יִשָּׂרֵֽף׃
It shall be eaten the same day ye offer it, and on the morrow; and if aught remain until the third day, it shall be burnt with fire.
Read kabbalistic (mystical) interpretation of Leviticus 19:6: and classical mystical sources.