Brahma-vidyā: Satya–Tapas and the Enumeration of Tattvas
Arjuna–Vāsudeva framed dialogue
वानप्रस्थं द्विजातीनां त्रयाणामुपदिश्यते । सर्वेषामेव वर्णानां गार्हस्थ्यं तद् विधीयते
vānaprasthaṃ dvijātīnāṃ trayāṇām upadiśyate | sarveṣām eva varṇānāṃ gārhasthyaṃ tad vidhīyate ||
বায়ু বললেন—তিন দ্বিজের (ব্রাহ্মণ, ক্ষত্রিয়, বৈশ্য) জন্যই ‘বানপ্রস্থ’ আশ্রম বিধিবদ্ধ; কিন্তু গার্হস্থ্য আশ্রম সকল বর্ণের জন্য নির্ধারিত।
वायुदेव उवाच
The verse distinguishes eligibility and universality within āśrama-dharma: vānaprastha is specifically prescribed for the three twice-born varṇas, while gārhasthya (householder duty) is prescribed for all varṇas as the common social and ethical foundation.
Vāyudeva is instructing the listener(s) on dharma-oriented life-stages, setting out who is enjoined to undertake forest-dwelling austerities and affirming that household responsibilities apply across society, as part of a broader teaching that leads toward self-knowledge and disciplined living.