It's verse 2.31 from the Bhagavad-gītā:
स्वधर्ममपि चावेक्ष्य न विकम्पितुमर्हसि ।
धर्म्याद्धि युद्धाच्छ्रेयोऽन्यत्क्षत्रियस्य न विद्यते ॥ ३१ ॥
sva-dharmam api cāvekṣya na vikampitum arhasi
dharmyād dhi yuddhāc chreyo ’nyat kṣatriyasya na vidyate
2.31 Even considering your own duty you should not waver, since there is nothing else better ...
After the war was over, Kunti disclosed the identity of Karna.
‘That hero and great bowman, that leader of leaders of car-divisions,
that warrior distinguished by every mark of heroism, who hath been
slain by Arjuna in battle, that warrior whom, ye sons of Pandu, ye
took forth, Suta’s child born of Radha, that hero who shone in the
midst of his ...
Both battle formations appear to be different. The Critical Edition of the Mahābhārata uses "Cakravyūha" (wheel formation) to describe the formation Droṇa constructed on the 13th day of the war in which Abhimanyu was killed.
07,033.012 saṃjaya uvāca
07,033.012a cakravyūho mahārāja ācāryeṇābhikalpitaḥ
The story of andhak is described in Mahbharat Harivamsa parva Chapter 86
VaishampAyana said Long ago, after her sons were slain by Vishnu, the splendorous Vishnu, Diti worshipped Kashyapa, the son of Marichi, by doing penance. O the one of bharata race! Diti performed penance, appropriate to various times and served, obeyed and treated the sage sweetly. ...
Karna's kundalas (ear rings), along with his kavacha (mail/armour), make him immortal. His ear-rings arose from amrita. It is due to both that Karna cannot be killed in battle.
Vaisampayana continued, "Although thus urged with various words by Karna, still, O chief of the Bharata race, that Brahmana did not ...