Reference for Orlah 1:7
הֶעָלִים, וְהַלּוּלָבִים, וּמֵי גְּפָנִים, וּסְמָדַר, מֻתָּרִים בָּעָרְלָה וּבָרְבָעִי וּבַנָּזִיר, וַאֲסוּרִים בָּאֲשֵׁרָה. רַבִּי יוֹסֵי אוֹמֵר, הַסְּמָדַר אָסוּר, מִפְּנֵי שֶׁהוּא פְּרִי. רַבִּי אֱלִיעֶזֶר אוֹמֵר, הַמַּעֲמִיד בִּשְׂרָף הָעָרְלָה, אָסוּר. אָמַר רַבִּי יְהוֹשֻׁעַ, שָׁמַעְתִּי בְּפֵרוּשׁ, שֶׁהַמַּעֲמִיד בִּשְׂרָף הֶעָלִים וּבִשְׂרָף הָעִקָּרִים, מֻתָּר, בִּשְׂרָף הַפַּגִּים, אָסוּר, מִפְּנֵי שֶׁהֵם פְּרִי:
Leaves, sprouts, the sap of vines and vine buds, are permitted regarding [the laws of] <i>Orlah</i>, <i>Revai</i> [the fruit of a tree in the fourth year after its planting, which must be taken to Jerusalem and consumed there] and to a Nazirite, but are prohibited regarding [the laws of] <i>Asherah</i> [idolatrous tree of which all benefit is prohibited]. Rabbi Yose says, vine-buds are prohibited, because they are [considered] a fruit. Rabbi Eliezer says, if one curdles milk with the resin of <i>Orlah</i>, it is prohibited. Rabbi Yehoshua said, I have heard explicitly [i.e., I have a received tradition] that if one curdles with resin of leaves or the resin of roots, it is permitted; with the resin of unripe fruit, it is forbidden, because they are [considered] a fruit.