The right to receive a portion of the sacred offerings is not an automatic birthright granted to anyone born into the priesthood. Instead, it is a privilege earned through strict standards of purity, active participation, and unwavering faith. The process begins with absolute focus; from the very first moment of collecting the blood, the priest must have the clear intention that the service is specifically for a peace offering [תורה תמימה].
When it comes to distributing the prized right thigh of the offering, the primary approach among commentators is that the meat is not given to a random priest selected by the owner, nor is it restricted solely to the single individual who performed the service. Rather, it belongs to the entire family group of priests working in the sanctuary that day, including those who assist directly or indirectly [רלב״ג, העמק דבר, ביאור יש״ר, שטיינזלץ]. However, another perspective maintains that the right thigh is awarded exclusively to the priest who casts the blood against the altar, while the chest portion is shared among the rest of the priests [אבן עזרא].
Beyond active participation, a priest must be legally fit to serve, which requires a state of absolute purity. A unique and stringent condition applies to this specific offering, demanding continuous purity throughout the most critical stages of the service. The priest must remain completely pure during both the casting of the blood and the burning of the fat on the altar. If his status changes at any point—such as being pure while handling the blood but becoming impure before the fat is burned, or conversely, being impure initially but purifying himself before handling the fat—he forfeits his right to any portion of the meat [רש״י, מזרחי, רלב״ג, תורה תמימה]. This strict requirement ensures that an unbroken state of purity connects both core elements of the service [שפתי חכמים, גור אריה, מלבי״ם, רד״צ הופמן, רש״ר הירש].
Finally, physical purity and active participation must be matched by spiritual integrity. Being a direct descendant of Aaron is insufficient on its own. To merit a portion, a priest must fully embrace the spiritual legacy of his ancestors and believe in the sanctity of the service. A priest who rejects the Commandment of the offerings or denies that it is a direct directive from God loses his right to serve in the sanctuary entirely, forfeiting any claim to a reward or a share of the sacred portions [מלבי״ם, תורה תמימה, רש״ר הירש].