Reference for Maasrot 5:7

חוֹרֵי הַנְּמָלִים שֶׁלָּנוּ בְצַד הָעֲרֵמָה הַחַיֶּבֶת, הֲרֵי אֵלּוּ חַיָּבִים, שֶׁיָּדוּעַ שֶׁמִּדָּבָר הַגָּמוּר הָיוּ גּוֹרְרִין כָּל הַלָּיְלָה:

Anthills that have remained the whole night near a pile [of grain] that required [tithing], these [grains found in the anthills] require [tithing], since it is obvious that [the ants] have been dragging away the whole night from something [of which the work] was completed.

Jastrow

Jastrow