וְאֵת֙ שְׁתֵּ֣י הַכְּלָיֹ֔ת וְאֶת־הַחֵ֙לֶב֙ אֲשֶׁ֣ר עֲלֵהֶ֔ן אֲשֶׁ֖ר עַל־הַכְּסָלִ֑ים וְאֶת־הַיֹּתֶ֙רֶת֙ עַל־הַכָּבֵ֔ד עַל־הַכְּלָיֹ֖ת יְסִירֶֽנָּה׃
and the two kidneys, and the fat that is upon them, which is by the loins, and the lobe above the liver, which he shall take away by the kidneys.
Read halakhic rulings (Jewish law) on Leviticus 3:15 from the Mishneh Torah and classical halakhic sources, free online.