One should not, while he is in an impure state, cast one's eyes on these three things, viz., the sun, the moon and the stars.
त्रीणि तेजांसि नोच्छिष्ट उदीक्षेत कदाचन॥ सूर्याचन्द्रमसौ चैव नक्षत्राणि च सर्वशः।