Rashi, on Ps 50:9

“Thou shalt sprinkle me with hyssop, and I shall be cleansed: thou shalt wash me, and I shall be made whiter than snow.”

“Purify me with a hyssop As one purifies the “mezora” and the one who became unclean through contact with a corpse.”

Imported from an open dataset — not yet checked against the printed edition.