The Levites receive a tithe from the Israelites as compensation for their service, yet they are not the final link in the chain of giving. They also carry an obligation to separate a portion of their income and pass it on to the Priests. The primary approach among commentators [תורה תמימה, מלבי״ם, הכתב והקבלה] is that the Levites must take a tithe from the tithe they receive and give it to the Priests. They are specifically warned to select only the finest and highest quality produce for this contribution. Furthermore, this separation must be performed from crops that are physically gathered together in one location [הכתב והקבלה].
Until this requirement is fulfilled, the Levites are strictly forbidden from eating any of their tithe. In its initial state, the produce retains a certain level of holiness and restriction [אבן עזרא, העמק דבר]. It is only after the physical act of separation is complete that a critical transition occurs, changing the status of the remaining food from restricted to completely permitted [רש״י, מזרחי, שפתי חכמים, גור אריה].
Once the finest portion is handed over to the Priest, the remaining nine parts undergo a total transformation. They lose all sacred restrictions and are treated exactly like the ordinary harvest of a regular Israelite [רש״י, ביאור שטיינזלץ, שפתי כהן, ביאור יש״ר]. This clarification is crucial because elsewhere in the Torah, the tithe of the Levite is referred to with terms usually reserved for holy priestly portions. To prevent the misconception that the food retains a sacred status that would forbid a non-Priest from eating it, it is explicitly compared to everyday grain [רש״י, מלבי״ם, מזרחי, גור אריה].
This ordinary status carries clear practical implications. Because the remaining produce is completely devoid of sacred restrictions, the Levites may eat it anywhere, even in places of impurity such as a cemetery. This stands in sharp contrast to the gifts given to the Priests, which must be consumed in a state of strict purity [שפתי כהן, אבן עזרא]. Additionally, the Levites may use this food for any ordinary human need, including business and trade, whereas priestly gifts are strictly limited to eating, drinking, and anointing [העמק דבר].
Although God addresses the Levites directly, He refers to them in the third person. This subtle shift emphasizes that once the priestly portion is removed, the remaining produce becomes the absolute and exclusive property of the Levites. It represents their rightful share in the land and the earned wages for their labor. This differs fundamentally from the gifts granted to the Priests, which are given as an expression of greatness and kindness from God, independent of any specific physical labor [רש״ר הירש, העמק דבר, שפתי כהן].