Reference for Avodah Zarah 105:6

אמר חזקיה דאמר קרא (ישעיהו ח, כא) והיה כי ירעב והתקצף וקלל במלכו ובאלהיו ופנה למעלה וכתיב בתריה ואל ארץ יביט והנה צרה וחשכה וגו' דאע"ג דקלל מלכו ואלהיו ופנה למעלה אל ארץ יביט:

Hezekiah said: Because the verse stated, “And it shall come to pass that, when he shall be hungry, he shall fret, and curse his king and his god, and turn his face upward,” and following this it is written, “And he shall look to the earth, and behold distress and darkness” (Isaiah 8:21). Thus, although he cursed his king and his god and turn upward [to the true God], he still looks down to the earth.

Jastrow