Chagiga1: 3
עוֹלוֹת בַּמּוֹעֵד בָּאוֹת מִן הַחֻלִּין, וְהַשְּׁלָמִים מִן הַמַּעֲשֵׂר.  יוֹם טוֹב רִאשׁוֹן שֶׁל פֶּסַח — בֵּית שַׁמַּאי אוֹמְרִים: מִן הַחֻלִּין. וּבֵית הִלֵּל אוֹמְרִים: מִן הַמַּעֲשֵׂר.
Olos [which are not obligatory] may be brought during [Chol] HaMoed. [All olos may be brought only] from unconsecrated funds, while shelamim [may be purchased] with tithe money.  [Concerning the chagigah brought on] the first day of Pesach, Beis Shammai say: [It may be purchased only] with unconsecrated money. Beis Hillel say: [It may be purchased] with tithe money.