Mahabharata 12.234.18

जघन्यशायी पूर्वं स्यादुत्थायी गुरुवेश्मनियच्च शिष्येण कर्तव्यं कार्यं दासेन वा पुनः

jaghanyaśāyī pūrvaṃ syādutthāyī guruveśmaniyacca śiṣyeṇa kartavyaṃ kāryaṃ dāsena vā punaḥ

Our plain-language meaning of this verse is waiting for scholar review.