Ramayana
उत्सृज्यार्कमिमं राम प्रधावन्तं प्लवङ्गमम् । अवेक्ष्यैवं परावृत्त्य मुखशेषः पराङ्मुखः ॥ 7-35-41 ॥
Abandoning the sun, O Rama, and seeing this monkey rushing toward him in this way, Rahu, who was left with only his face, turned about and fled with his face away.
english translation