I Samuel 2:13 Halakhah

וּמִשְׁפַּ֥ט הַכֹּהֲנִ֖ים אֶת־הָעָ֑ם כָּל־אִ֞ישׁ זֹבֵ֣חַ זֶ֗בַח וּבָ֨א נַ֤עַר הַכֹּהֵן֙ כְּבַשֵּׁ֣ל הַבָּשָׂ֔ר וְהַמַּזְלֵ֛ג שְׁלֹ֥שׁ־הַשִּׁנַּ֖יִם בְּיָדֽוֹ׃

And the custom of the priests with the people was, that, when any man offered sacrifice, the priest’s servant came, while the flesh was in seething, with a flesh-hook of three teeth in his band;