Shloka 121
मानसतीर्थ-शौचप्रशंसा | Praise of the ‘Mental Tīrtha’ and the Marks of Purity
एकोनत्रिंशे दिवसे यः प्राशेदेकभोजनम्,जो बारह महीनोंतक सदा सत्यव्रतके पालनमें तत्पर हो उन््तीसवें दिन एक बार भोजन करता है, उसे देवर्षियों तथा राजर्षियोंद्वारा पूजित दिव्य मंगलमय लोक प्राप्त होते हैं
ekonatriṁśe divase yaḥ prāśed ekabhojanam | yo dvādaśa māsān yāvat sadā satyavrate pālane tatparo bhavati, sa ekonatriṁśe dine ekavāraṁ bhuṅkte; tena devarṣibhiḥ rājarṣibhiś ca pūjitaṁ divyaṁ maṅgalamayaṁ lokaṁ prāpnoti ||
毗湿摩说道：若有人十二个月恒常奉持“真实之誓”，并在第二十九日仅进食一次，便能到达吉祥而神圣的境界——为天仙圣者（deva-ṛṣi）与王圣者（rāja-ṛṣi）所礼敬之处。此教诲赞叹以纪律自制相辅、以不动摇的真实为本，乃通向崇高灵性果报之道。
भीष्म उवाच
Educational Q&A
Truthfulness sustained as a vow, combined with disciplined moderation in eating (single-meal observance on a specified day), is presented as a dharmic practice that yields exalted spiritual merit and access to auspicious celestial realms.
In Anushasana Parva, Bhishma continues instructing Yudhishthira on dharma by describing the fruits of specific vratas. Here he states the reward for a year-long commitment to satyavrata coupled with a regulated single-meal observance on the twenty-ninth day.