Shloka 49
Brahma-vidyā: Satya–Tapas and the Enumeration of Tattvas
Arjuna–Vāsudeva framed dialogue
तत्त्वानामथ यो वेद सर्वेषां प्रभवाप्ययौ | स धीर: सर्वभूतेषु न मोहमधिगच्छति,जो इन सब तत्त्वोंकी उत्पत्ति और लयको ठीक-ठीक जानता है, वह सम्पूर्ण प्राणियोंमें धीर है और वह कभी मोहमें नहीं पड़ता
tattvānām atha yo veda sarveṣāṃ prabhavāpyayau | sa dhīraḥ sarvabhūteṣu na moham adhigacchati ||
风神伐由说道：“凡真实了知一切根本原理（塔特瓦）的生起与归灭者，便能于诸有情中安住坚忍之心；此人不堕迷妄。”
वायुदेव उवाच
Educational Q&A
True insight into the arising and dissolution of all tattvas produces dhairya (steadfast wisdom). Such knowledge stabilizes the mind and prevents moha—delusion that leads to wrong judgment and unethical action.
Vāyudeva is instructing the listener with a concise doctrinal statement: understanding the cosmic process of manifestation and reabsorption of fundamental principles is presented as the basis for inner composure and freedom from delusion.