וַיִּרְחַ֥ץ אֶת־הַקֶּ֖רֶב וְאֶת־הַכְּרָעָ֑יִם וַיַּקְטֵ֥ר עַל־הָעֹלָ֖ה הַמִּזְבֵּֽחָה׃
And he washed the inwards and the legs, and made them smoke upon the burnt-offering on the altar.
Targum Jonathan on Leviticus
And he washed the inwards and the fat, and burned the burnt offering, at the altar.