Reference for Maaser Sheni 5:6
עֶרֶב יוֹם טוֹב הָרִאשׁוֹן שֶׁל פֶּסַח שֶׁל רְבִיעִית וְשֶׁל שְׁבִיעִית, הָיָה בִעוּר. כֵּיצַד הָיָה בִעוּר, נוֹתְנִין תְּרוּמָה וּתְרוּמַת מַעֲשֵׂר לַבְּעָלִים, וּמַעֲשֵׂר רִאשׁוֹן לִבְעָלָיו, וּמַעֲשַׂר עָנִי לִבְעָלָיו. וּמַעֲשֵׂר שֵׁנִי וְהַבִּכּוּרִים מִתְבַּעֲרִים בְּכָל מָקוֹם. רַבִּי שִׁמְעוֹן אוֹמֵר, הַבִּכּוּרִים נִתָּנִין לַכֹּהֲנִים כַּתְּרוּמָה. הַתַּבְשִׁיל, בֵּית שַׁמַּאי אוֹמְרִים, צָרִיךְ לְבַעֵר. וּבֵית הִלֵּל אוֹמְרִים, הֲרֵי הוּא כִּמְבֹעָר:
The day before the first holiday day of Passover of the fourth and seventh years of the Sabbatical cycle, there was a removal. How was the removal done? They give the <i>Terumah</i> [produce consecrated for priestly consumption], and <i>Terumat Ma'aser</i> [a portion of the tithes that is given to the priest] to the owners, and <i>Ma'aser Rishon</i> [first tithe, which must be given to the Levite] to its owners, and the poor man's tithe to its owners. And <i>Ma'aser Sheni</i> [second tithe, which must be eaten in Jerusalem] and <i>Bikurim</i> [first-fruits that must be given to the priest] require removal everywhere. Rabbi Shimon says: <i>Bikurim</i> are given to the priests like <i>Terumah</i>. Cooked food—the House of Shammai say it must be removed and the House of Hillel say it is as if it has [already] been removed.