"And when the zav is cleansed from his discharge... And on the eighth day, he shall take for himself two turtledoves..."—Leviticus 15:13-14.
A man who is a zav [one who suffers an abnormal seminal discharge] must, after the disorder has been cured, bring an offering—two pigeons or two turtledoves, one as a Burnt Offering and one as a Sin Offering.
Until he brings this offering, his purification process is not complete and he may not partake of sacrificial flesh.
"On the eighth day, he shall take two unblemished male lambs and one female ewe"—Leviticus 14:10.
A metzora [one who suffers from the biblical disease known as tzara'at] must, after the disorder has been cured, bring an offering: Three animals – one as a Burnt Offering, one as a Sin Offering, and one as a Guilt Offering – and a log of oil. If his financial means do not allow for this, he can instead bring one lamb as a guilt offering and two pigeons or two turtledoves, one as a Burnt Offering and one as a Sin Offering.
Until he brings this offering, his purification process is not complete and he may not partake of sacrificial flesh.