אַךְ־בְּכ֞וֹר אֲשֶׁר־יְבֻכַּ֤ר לַֽיהוָה֙ בִּבְהֵמָ֔ה לֹֽא־יַקְדִּ֥ישׁ אִ֖ישׁ אֹת֑וֹ אִם־שׁ֣וֹר אִם־שֶׂ֔ה לַֽיהוָ֖ה הֽוּא׃
Howbeit the firstling among beasts, which is born as a firstling to the LORD, no man shall sanctify it; whether it be ox or sheep, it is the LORD’S.
Find Mishnaic references to Leviticus 27:26: , passages from the 63 tractates of the Mishnah.