Valmiki Ramayana 2.91.22

एवं समाधिना युक्तस्तेजसा ऽप्रतिमेन च ।शीक्षास्वरसमायुक्तं तपसा चाब्रवीन्मुनि:॥

evaṃ samādhinā yuktastejasā 'pratimena ca |śīkṣāsvarasamāyuktaṃ tapasā cābravīnmuni: ||

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