The Mishnah
פסחים ז׳Pesachim 7
Perek 7 of 10 in Pesachim — 13 mishnayot
Mishnah 1א׳
כֵּיצַד צוֹלִין אֶת הַפֶּסַח, מְבִיאִין שַׁפּוּד שֶׁל רִמּוֹן, תּוֹחֲבוֹ מִתּוֹךְ פִּיו עַד בֵּית נְקוּבָתוֹ, וְנוֹתֵן אֶת כְּרָעָיו וְאֶת בְּנֵי מֵעָיו לְתוֹכוֹ, דִּבְרֵי רַבִּי יוֹסֵי הַגְּלִילִי. רַבִּי עֲקִיבָא אוֹמֵר, כְּמִין בִּשּׁוּל הוּא זֶה, אֶלָּא תוֹלִין חוּצָה לוֹ:
How is the Pesach roasted? A pomegranate spit is brought [and not one of other woods, for they exude water, rendering the Pesach quasi-cooked in water (which is interdicted by Scripture), and pomegranate wood does not exude water. And it is also not to be roasted on a spit of metal, as stated below, for metal, when part of it is hot, all of it is hot, so that the meat is roasted by the metal, whereas Scripture states (Exodus 12:9): "roasted in fire," and not roasted by something else.], and it (the spit) is stuck from the midst of its mouth until its bottom, and its legs and entrails are placed within it. These are the words of R. Yossi Haglili. R. Akiva says: This is a kind of cooking, [its entrails being cooked within it as within a pot.] Rather, they are suspended outside it. [They are suspended on the spit above the mouth of the lamb. The halachah is in accordance with R. Akiva.]
Mishnah 2ב׳
אֵין צוֹלִין אֶת הַפֶּסַח לֹא עַל הַשַּׁפּוּד וְלֹא עַל הָאַסְכְּלָא. אָמַר רַבִּי צָדוֹק, מַעֲשֶׂה בְּרַבָּן גַּמְלִיאֵל שֶׁאָמַר לְטָבִי עַבְדּוֹ, צֵא וּצְלֵה לָנוּ אֶת הַפֶּסַח עַל הָאַסְכְּלָא. נָגַע בְּחַרְסוֹ שֶׁל תַּנּוּר, יִקְלֹף אֶת מְקוֹמוֹ. נָטַף מֵרָטְבּוֹ עַל הַחֶרֶס וְחָזַר עָלָיו, יִטֹּל אֶת מְקוֹמוֹ. נָטַף מֵרָטְבּוֹ עַל הַסֹּלֶת, יִקְמֹץ אֶת מְקוֹמוֹ:
The Pesach is to be roasted neither on a spit (of metal) nor on a grill. R. Tzaddok said: Once R. Gamliel said to Tevi, his bondsman: "Go out and roast the Pesach for us on a grill. [Our Mishnah is incomplete. The complete version: "…and if the grill has holes, it is kasher. And R. Tzaddok said: Once, etc."] If the Pesach touched the clay of an oven, its place should be peeled. [He should peel from the Pesach the place that came in contact with the stove, it having been roasted there by the heat of the oven clay, so that it is not "roasted by fire."] If some of its juice dripped on the clay and returned to it [i.e., If the fats heated by the clay returned to the Pesach and were absorbed in it], its place should be removed. [It is not enough to peel it off, but about the thickness of a finger should be removed. For fats are well absorbed into it, and those fats are clay-roasted.] If some of its juice dripped onto flour [and the flour were heated, in which instance the juice is broiled by the flour and the juice in the flour may not be eaten, being broiled by something else (i.e., other than fire)], he should take a handful from its place [and burn that handful, as (one does with) other kodshim (consecrated foods) that become unfit.]
Mishnah, Torat Emet 357 edition, via Sefaria — public domain
English: The Mishna with Obadiah Bartenura, tr. Rabbi Shraga Silverstein, via Sefaria — CC BY