Muni's Playtranslation from https://sacred-texts.com/hin/m13/m13b076.htm transliteration from https://sacred-texts.com/hin/mbs/mbs13118.htm
Book 13 - anushasana parva Chapter 12
11 ekaḥ prasūto rājendra jantur eko vinaśyati ekas tarati durgāṇi gacchaty ekaś ca durgatim
Brihaspati said, ‘One is born alone, O king, and one dies alone; one crosses alone the difficulties one meets with, and one alone encounters whatever misery falls to one’s lot. One has really no companion in these acts.
17 dharmaś cārthaś ca kāmaś ca tritayaṃ jīvite phalam etat trayam avāptavyam adharmaparivarjitam Piety, wealth and pleasure,—these three constitute the fruit of life. One should acquire these three by means of being free from impropriety and sin.’
chapter 14
8 na tatparasya saṃdadyāt pratikūlaṃ yad ātmanaḥ eṣa saṃkṣepato dharmaḥ kāmād anyaḥ pravartate
One should never do that to another which one regards as injurious to one’s own self. This, in brief, is the rule of Righteousness. One by acting in a different way by yielding to desire, becomes guilty of unrighteousness.
9 pratyākhyāne ca dāne ca sukhaduḥkhe priyāpriye ātmaupamyena puruṣaḥ samādhim adhigacchati
In refusals and gifts, in happiness and misery, in the agreeable, and the disagreeable, one should judge of their effects by a reference to one’s own self.