Reference for Keritot 49:30

אימא סיפא

and atoning<span class="x" onmousemove="('comment',' Qualifying sacrifices are those which are offered to render a person fit or clean for the Temple or the community, such as the guilt-offering of the leper after recovery which is offered in the Temple; atoning sacrifices are those which procure atonement for sin, such as ordinary sin- and guilt-offerings.');">¹⁷</span>

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