ויקרא, פרק ג׳, פסוק י׳

Offering an animal sacrifice requires careful attention to its physical anatomy, particularly the internal organs designated for the altar. The instructions detail the removal of the kidneys to be offered to God. However, a subtle spelling variation in the original Hebrew text opens the door to a broader legal understanding. Rather than limiting the requirement to an animal with a standard physical structure, a unique ruling in the Talmud expands the law. According to this deduction, even if an animal possesses only a single kidney, it is still included in this requirement and must be prepared accordingly [צפנת פענח].