Mahabharata — Anushasana Parva, Shloka 153
मातङ्ग–शक्रसंवादः
Mataṅga–Śakra Dialogue on Tapas, Status, and Moral Qualities
प्रकाशन्तो दिश: सर्वा विस्मयं परम ययु: । उन ऋषियोंकी तपस्याके प्रभावसे सम्पूर्ण दिशाओंको प्रकाशित होती देख पाण्डवोंको बड़ा विस्मय हुआ
prakāśanto diśaḥ sarvā vismayaṃ paramaṃ yayuḥ | un ṛṣīnāṃ tapasāṃ prabhāvāt samantād diśaḥ prakāśamānā dṛṣṭvā pāṇḍavā mahad vismitaṃ jagmuḥ |
毗湿摩波耶那说：四方尽皆光明，般度五子为至极的惊异所摄。见诸方因那些仙人苦行之力（tapas）而普遍照耀，他们体悟到修持之威德竟能改变可见之世。
वैशम्पायन उवाच
Educational Q&A
The verse highlights tapas as a dharmic force: disciplined spiritual practice by sages possesses real efficacy (prabhāva) that can bring clarity and auspiciousness, inspiring reverence and ethical orientation in observers.
As the sages’ austerities manifest, the quarters of space appear illuminated. Witnessing this extraordinary sign, the Pāṇḍavas are filled with profound astonishment, recognizing the sages’ spiritual potency.