The mitzvah of Kisui HaDam commands us to cover the blood of a slaughtered kosher wild animal (chayah, e.g., deer) or bird. This law does not apply to domesticated animals (behemah, such as cattle, sheep, goats). The covering should be done with “dust” — earth, fine ashes, sawdust, or another valid substance — both beneath and above the blood.
Before performing the act, one recites the blessing “על כיסוי הדם בעפר”. The obligation falls upon the shochet, though another may fulfill it.

This mitzvah teaches reverence for life, preventing cruelty or indifference in the act of slaughter. By covering the blood, we elevate the act of eating into a conscious, spiritual discipline.

Commentary & Classical Explanation:

• Rambam (Hilchot Shechitah 14:1–6): Defines which species require Kisui HaDam and the proper method.
• Sefer HaChinuch (Mitzvah 187): Explains the root is to cultivate compassion and holiness in our hearts.
• Talmud (Chullin 83b–88b): Establishes the laws, species, materials, and blessing.