Leviticus 15:15

וְעָשָׂ֤ה אֹתָם֙ הַכֹּהֵ֔ן אֶחָ֣ד חַטָּ֔את וְהָאֶחָ֖ד עֹלָ֑ה וְכִפֶּ֨ר עָלָ֧יו הַכֹּהֵ֛ן לִפְנֵ֥י יְהוָ֖ה מִזּוֹבֽוֹ׃ ס

καὶ ποιήσει αὐτὰ ὁ ἱερεὺς μίαν περὶ ἁμαρτίας κα μίαν εἰς ὁλοκαύτωμα, καὶ ἐξιλάσεται περὶ αὐτοῦ ὁ ἱερεὺς ἔναντι Κυρίου ἀπὸ τῆς ῥύσεως αὐτοῦ.

Greek text from Swete's edition, CC BY-SA 4.0

Y harálos el sacerdote, el uno ofrenda por el pecado, y el otro holocausto: y le purificará el sacerdote de su flujo delante de Jehová.

The priest is to sacrifice them, one as a sin offering and the other as a burnt offering. In this way the priest will make atonement for the man before the LORD because of his discharge.