Śāṅkhāyana (Kauṣītaki) Āraṇyaka 7.10

7.10

ŚĀ 7,10
sa yadi prāṇaṃ vaṃśaṃ bruvantaṃ param upavadet śaknuvantaṃ cen manyeta - prāṇaṃ vaṃśaṃ samadhitsiṣam prāṇaṃ vaṃśaṃ saṃdhitsituṃ na śaknoṣītyāttha | prāṇas tvā vaṃśo hāsyatītyevainaṃ brūyāt | atha ced aśaknuvantaṃ manyeta - prāṇaṃ vaṃśaṃ samadhitsīs tan nāśakaḥ saṃdhātum | prāṇas tvā vaṃśo hāsyatītyevainaṃ brūyāt | yathā nu kathā ca bruvantaṃ vābruvantaṃ vā brūyād abhyāśam eva yat tat tathā syāt | na tvevānyat kuśalād brāhmaṇaṃ brūyād atidyumna eva brāhmaṇaṃ brūyān nātidyumne ca na brāhmaṇaṃ brūyān namo 'stu brāhmaṇebhya iti śauravīro māṇḍūkeyaḥ ||

If he should reproach another who is speaking of breath as the beam, if he considers him able: 'I have wished to join the breath-beam; you say, "You cannot join the breath-beam"', he should say to him: 'Breath, the beam, will abandon you.' But if he considers him unable: 'You wished to join the breath-beam; you were not able to join it', he should say to him: 'Breath, the beam, will abandon you.' In whatever way he might speak to him, speaking or not speaking, it would surely soon be so. But one should not speak to a brahmin anything other than what is auspicious. One should speak to a brahmin only when pre-eminent in glory, and not when not pre-eminent in glory; one should not [reproach] a brahmin. 'Homage be to brahmins': thus [said] Māṇḍūkeya Śauravīra.