Shloka 773
मानसतीर्थ-शौचप्रशंसा | Praise of the ‘Mental Tīrtha’ and the Marks of Purity
आवर्तनानि चत्वारि साधयेच्चाप्यसौ नर: । वह पुरुष सौ पद्म वर्षोके समान दस महाकल्प तथा चार चतुर्युगीतक अपने पुण्यका फल भोगता है
āvartanāni catvāri sādhayec cāpy asau naraḥ |
毗湿摩说道：“凡能圆满成就所规定的四次循环（āvartana）者，便将享受其功德之果，历时长久不可量度——譬如百‘莲华年’，十个大劫（mahākalpa），以及四个四时代（caturyuga）。”
भीष्म उवाच
Educational Q&A
The core teaching is that steadfast completion of prescribed religious disciplines (here, ‘four āvartanas’) generates vast puṇya, whose reward is portrayed as lasting across immense cosmic time-measures—highlighting the Mahābhārata’s link between disciplined dharma-practice and enduring karmic results.
Bhīṣma is instructing (as a dharma-teacher figure) about the spiritual efficacy of a particular observance: he states that a person who completes the four cycles of that practice enjoys its meritorious fruit for extraordinarily long periods, expressed through grand cosmological units (lotus-years, mahākalpas, caturyugas).