Gita Chapter 18.21 to 18.25

Prithaktwena tu yajjnaanam naanaabhaavaan prithagvidhaan;
Vetti sarveshu bhooteshu tajjnaanam viddhi raajasam.
21. But that knowledge which sees in all beings various entities of distinct kinds as different from one another—know thou that knowledge to be Rajasic (passionate).

Yattu kritsnavadekasmin kaarye saktamahaitukam;
Atattwaarthavadalpam cha tattaamasamudaahritam.
22. But that which clings to one single effect as if it were the whole, without reason, without foundation in Truth, and trivial—that is declared to be Tamasic (dark).

Niyatam sangarahitam araagadweshatah kritam;
Aphalaprepsunaa karma yattat saattwikamuchyate.
23. An action which is ordained, which is free from attachment, which is done without love or hatred by one who is not desirous of any reward—that action is declared to be Sattwic.

Yattu kaamepsunaa karma saahankaarena vaa punah;
Kriyate bahulaayaasam tadraajasamudaahritam.
24. But that action which is done by one longing for the fulfilment of desires or gain, with egoism or with much effort—that is declared to be Rajasic.

Anubandham kshayam himsaam anavekshya cha paurusham;
Mohaadaarabhyate karma yattat taamasamuchyate.
25. That action which is undertaken from delusion, without regard to the consequences of loss, injury and (one’s own) ability—that is declared to be Tamasic.

Gita Chapter 16.16 to 16.20

Anekachittavibhraantaah mohajaalasamaavritaah;
Prasaktaah kaamabhogeshu patanti narake’shuchau.
16. Bewildered by many a fancy, entangled in the snare of delusion, addicted to the gratification of lust, they fall into a foul hell.

Aatmasambhaavitaah stabdhaa dhanamaanamadaanvitaah;
Yajante naamayajnaiste dambhenaavidhipoorvakam.
17. Self-conceited, stubborn, filled with the intoxication and pride of wealth, they perform sacrifices in name, through ostentation, contrary to scriptural ordinances.

Ahankaaram balam darpam kaamam krodham cha samshritaah;
Maamaatmaparadeheshu pradwishanto’bhyasooyakaah.
18. Given over to egoism, power, haughtiness, lust and anger, these malicious people hate Me in their own bodies and those of others.

Taanaham dwishatah krooraan samsaareshu naraadhamaan;
Kshipaamyajasram ashubhaan aasureeshweva yonishu.
19. These cruel haters, the worst among men in the world,—I hurl all these evil-doers for ever into the wombs of demons only.

Aasureem yonimaapannaa moodhaa janmani janmani;
Maamapraapyaiva kaunteya tato yaantyadhamaam gatim.
20. Entering into demoniacal wombs and deluded birth after birth, not attaining Me, they thus fall, O Arjuna, into a condition still lower than that!