מְדֻשָׁתִ֖י וּבֶן־גָּרְנִ֑י אֲשֶׁ֣ר שָׁמַ֗עְתִּי מֵאֵ֨ת יְהוָ֧ה צְבָא֛וֹת אֱלֹהֵ֥י יִשְׂרָאֵ֖ל הִגַּ֥דְתִּי לָכֶֽם׃ (ס)
O thou my threshing, and the winnowing of my floor, That which I have heard from the LORD of hosts, The God of Israel, have I declared unto you.
Find Talmudic references to Isaiah 21:10: , passages from the Talmud Bavli and Yerushalmi.