וַיַּכִּירָ֤הּ וַיֹּ֙אמֶר֙ כְּתֹ֣נֶת בְּנִ֔י חַיָּ֥ה רָעָ֖ה אֲכָלָ֑תְהוּ טָרֹ֥ף טֹרַ֖ף יוֹסֵֽף׃
And he knew it, and said: ‘It is my son’s coat; an evil beast hath devoured him; Joseph is without doubt torn in pieces.’
Read halakhic rulings (Jewish law) on Genesis 37:33: and classical halakhic sources.