כְּרֵֽעַ־כְּאָ֣ח לִ֭י הִתְהַלָּ֑כְתִּי כַּאֲבֶל־אֵ֝֗ם קֹדֵ֥ר שַׁחֽוֹתִי׃
I went about as though it had been my friend or my brother; I bowed down mournful, as one that mourneth for his mother.
Read halakhic rulings (Jewish law) on Psalms 35:14: and classical halakhic sources.