मृत्यु-काल-प्रबोधनम् (Instruction on Mortality, Time, and Truth) — Mahābhārata, Śānti-parva 169
तेषामप्यधमा राजन् कृतघ्ना मित्रघातका: । त्यक्तव्यास्तु दुराचारा: सर्वेषामिति निश्चय:
teṣām apy adhamā rājan kṛtaghnā mitraghātakāḥ | tyaktavyās tu durācārāḥ sarveṣām iti niścayaḥ ||
ພີສະມະກ່າວວ່າ: «ໂອ ພະຣາຊາ, ແມ່ນແຕ່ໃນບັນດາຜູ້ທີ່ຄວນຖືກຕຳນິນັ້ນ, ຜູ້ຕໍ່າສຸດກໍແມ່ນຜູ້ອະກະຕັນຍູ—ຜູ້ທີ່ກ້າຂ້າມິດຂອງຕົນ. ດັ່ງນັ້ນ ຄົນຊົ່ວຜູ້ປະພຶດຊົ່ວເຫຼົ່ານັ້ນ ຄວນຖືກລະທິ້ງແຕ່ໄກ; ນີ້ແມ່ນຄວາມເຫັນພ້ອມອັນໝັ້ນຄົງຂອງທຸກຄົນ».
भीष्म उवाच
Ingratitude is portrayed as the basest vice because it destroys trust and can lead even to betrayal and violence against friends; therefore, such incorrigibly immoral people should be avoided and renounced.
In the Śānti Parva’s instruction on dharma, Bhīṣma advises the king on recognizing harmful character types, declaring the ungrateful—capable of harming friends—as the worst and recommending that they be kept at a distance and abandoned.