Pesachim4: 2
כַּיּוֹצֵא בוֹ, הַמּוֹלִיךְ פֵּרוֹת שְׁבִיעִית מִמְּקוֹם שֶׁכָּלוּ לִמְקוֹם שֶׁלֹּא כָלוּ, אוֹ מִמְּקוֹם שֶׁלֹּא כָלוּ לִמְקוֹם שֶׁכָּלוּ — חַיָּב לְבָעֵר.  רַבִּי יְהוּדָה אוֹמֵר: אוֹמְרִים לוֹ: צֵא וְהָבֵא לָךְ אַף אָתָּה.
Similarly, one who transports crops of the Sabbatical year from a place where they have been exhausted to a place where they have not been exhausted, or from a place where they have not been exhausted to a place where they have been exhausted, is required to remove [them].  R' Yehudah says: We say to him, “Go out and bring for yourself.”