עַל־כֵּ֤ן אָמַ֙רְתִּי֙ לִבְנֵ֣י יִשְׂרָאֵ֔ל כָּל־נֶ֥פֶשׁ מִכֶּ֖ם לֹא־תֹ֣אכַל דָּ֑ם וְהַגֵּ֛ר הַגָּ֥ר בְּתוֹכְכֶ֖ם לֹא־יֹ֥אכַל דָּֽם׃ (ס)
所以我曾對以色列人說：你們中間任何人都不可吃血；寄居在你們中間的外人也不可吃血。
Guide for the Perplexed
Blood (Lev. 17:12), and nebelah, i.e., the flesh of an animal that died of itself (Deut. 14:21), are indigestible, and injurious as food; Trefah, an animal in a diseased state (Exod. 22:30), is on the way of becoming a nebelah.