Bhagavad Gita Chapter 1 Sloka 44 (1.44)

ಉತ್ಸನ್ನಕುಲಧರ್ಮಾಣಾಂ ಮನುಷ್ಯಾಣಾಂ ಜನಾರ್ದನ ।
ನರಕೇ ನಿಯತಂ ವಾಸೋ ಭವತೀತ್ಯನುಶುಶ್ರುಮ ॥೪೪॥
utsannakuladharmāṇāṃ manuṣyāṇāṃ janārdana |
narake niyataṃ vāso bhavatītyanuśuśruma ||44||
Sloka 1:44
Gist of the sloka:
O Janardhana, I have heard, that for those who have destroyed the samaja dharma, Hell is the only everlasting place for them.
Explanation:
Arjuna is implying [as per what he has understood from teachers] that post the war, living on the earth would be hell and being the cause of such destruction, they would get hell post death – probably permanently. All caused by our own actions.