וּבְפָרִשְׂכֶ֣ם כַּפֵּיכֶ֗ם אַעְלִ֤ים עֵינַי֙ מִכֶּ֔ם גַּ֛ם כִּֽי־תַרְבּ֥וּ תְפִלָּ֖ה אֵינֶ֣נִּי שֹׁמֵ֑עַ יְדֵיכֶ֖ם דָּמִ֥ים מָלֵֽאוּ׃
And when ye spread forth your hands, I will hide Mine eyes from you; Yea, when ye make many prayers, I will not hear; Your hands are full of blood.
Find Mishnaic references to Isaiah 1:15: , passages from the 63 tractates of the Mishnah.