The Compendium of Caraka 3.8.20_4

3.8.20_4

punaścāhū(hva)yamānaḥ prativaktavyaḥ---*parisaṃvatsaro bhavān śikṣasva tāvat; na tvayā gururupāsito nūnam, athavā paryāptametāvatte; sakṛdapi hi parikṣepikaṃ nihataṃ nihatamāhuriti nāsya yogaḥ kartavyaḥ kathañcit/

When challenged again, one should reply: 'Go study for a full year first; surely you have not served a teacher, or else this is enough for you. For even once cast down by encirclement, they say one is cast down!' In this manner, one should not engage with him at all.