Kārttavīrya-vadha (Death of Karttavīrya) / Bhārgava Rāma’s Battle with the King’s Sons
विशेषतस्तु पितरं गुरुं वा भूपतिं द्विजः / र७स्यं समुपासिनं न पश्येदिति निश्चयः
viśeṣatastu pitaraṃ guruṃ vā bhūpatiṃ dvijaḥ / ra7syaṃ samupāsinaṃ na paśyediti niścayaḥ
Especially, a dvija should not look upon his father, his guru, or the king when he is engaged in secret observance and worship; this is the settled rule.