The Great Epic of the Bhārata dynasty 6.26.38

6.26.38

svadharmasya yuddhasyākaraṇe dharmakīrtyornāśaḥ pāpāvāptiśca atha cet iti ślokena bhagavatā yadyapyuktā tathāpi yuddhasya arjunābhimate kāmyatvapakṣe ‘aho bata mahatpāpaṃ kartuṃ vyavasitā vayam | yadrājyasukhalobhena hantuṃ svajanamudyatāḥ |’ iti tatkaraṇe pāpaprasaktirasti tāṃ nivārayituṃ siddhyasiddhyoḥ samatvalakṣaṇaṃ yogamāha - sukhaduḥkhe iti | same kṛtvā sukhaduḥkhayostaddhetvoḥ rājyalābhālābhayostaddhetvośca jayājayayoḥ rāgadveṣāvakṛtvetyarthaḥ | kevalaṃ svadharmo'yamiti matvā yuddhāya yujyasva ghaṭasva | evaṃ kurvaṃstvaṃ pāpaṃ nāvāpsyasi | yastu rājyalobhena suhṛdvadhaṃ karoti tasyāstyeva pāpamiti bhāvaḥ | kathaṃ tarhi svadharmatvenānuṣṭhite'pi yuddhe hato vā prāpsyasi svargamityādiphalasmaraṇamānuṣaṅgikamiti brūmaḥ | tathācāpastambaḥ “tadyathāmre phalārthaṃ nirmite cchāyā gandhāvanūtpadyete evaṃ dharmaṃ caryamāṇamarthā anūtpadyante no cedanūtpadyante na dharmahānirbhavata |” ityāmranidarśanena pratipādayati ||