On the eve of Shevi’i Shel Pesach, a significant halachic obligation takes effect: the mitzvah of biur maasros, requiring those in Eretz Yisroel to ensure that all maasros have been properly separated and distributed, and that no produce or funds remain in their possession without having been given to their intended recipients.

According to halachah, this is the designated time to verify that all terumos and maasros were taken correctly, and that no agricultural produce or designated tithes are still being held without fulfilling their purpose.

The source of this mitzvah is the pasuk: “When you have finished tithing all the produce of your yield in the third year, the year of the tithe, you shall give to the Levi, the stranger, the orphan, and the widow, and they shall eat within your gates and be satisfied.” This obligation occurs twice during each shemittah cycle—at the end of the third and sixth years—and continues to apply today in accordance with the halachos observed after the churban.

This year, 5786, corresponds to the fourth year of the shemittah cycle, meaning the time has now arrived—following the completion of the maaser ani cycle—to carry out the biur. Practically, this requires anyone who still has produce from which terumos and maasros were not properly separated, or who is holding maasros that have not yet been given to a kohein, Levi, or ani, to address the matter without delay.

{Matzav.com}