Reference for Meilah 2:1
חַטַּאת הָעוֹף, מוֹעֲלִין בָּהּ מִשֶּׁהֻקְדְּשָׁה. נִמְלְקָה, הֻכְשְׁרָה לְהִפָּסֵל בִּטְבוּל יוֹם וּבִמְחֻסַּר כִּפּוּרִים וּבְלִינָה. הֻזָּה דָמָהּ, חַיָּבִין עָלֶיהָ מִשּׁוּם פִּגּוּל, נוֹתָר וְטָמֵא, וְאֵין בָּהּ מְעִילָה:
[With respect to] the bird sin offering, one is liable for <i> meilah</i> once they have been sanctified. Once they were slaughtered through <i>melika</i> [the kohen pierces the back of the bird's neck with his thumbnail] they become susceptible to becoming ineligible [if touched] by a <i>tevul yom</i> [ a person who has immersed himself in the <i>mikveh</i> that day and is waiting for sunset to become pure] or [a person who is] a <i>mechusar kippurim</i> [lacks atonement; he has not yet brought his sacrifice], or through <i>linah</i> [leaving certain portions of certain offerings overnight, thereby invalidating them]. Once their blood has been sprinkled one is liable for <i>pigul</i>, <i>notar</i> and<i>tamei</i>, and one is liable for <i>meilah</i>.