Shloka 90
मानसतीर्थ-शौचप्रशंसा | Praise of the ‘Mental Tīrtha’ and the Marks of Purity
पूर्णेडथ विंशे दिवसे यो भुड्क्ते होकभोजनम्
Bhīṣma uvāca: pūrṇe ’tha viṁśe divase yo bhuṅkte ekabhōjanam, sa lokān vipulān ramyān ādityānām upāśnute.
毗湿摩说：“凡满二十日仅食一餐者——守真言、持戒行、断肉食、修梵行（brahmacarya），并恒以一切众生之利益为念——将往生于太阳神诸阿底提耶（Āditya）广大而可乐之世界。”
भीष्म उवाच
Educational Q&A
The verse teaches that rigorous self-restraint—especially regulated eating (one meal after twenty days), truthfulness, vow-observance, non-meat diet, celibacy, and active concern for the welfare of all beings—leads to exalted spiritual merit and attainment of radiant heavenly realms associated with the Sun (Ādityas).
In Anuśāsana Parva, Bhishma instructs on dharma and the fruits of various vows and disciplines. Here he describes a specific austerity of infrequent single-meal observance and lists accompanying ethical restraints, concluding with the promised result: reaching the vast, pleasant worlds of the Sun-god.