BG 18.35

And that determination which cannot go beyond dreaming, fearfulness, lamentation, moroseness and illusion – such unintelligent determination, O son of Pṛthā, is in the mode of darkness.

18.35. The content, whery a foolish man does not give up his sleep, fear, grief, despondency and also arrogancethat content is deemed to be of the Tamas (Strand).

18.35 And that which clings perversely to false idealism, fear, grief, despair and vanity is the product of Ignorance.

18.33-35 Dhrtya etc. upto Tamasi mata. One restrains the activities of his mind, living breath and senses, with Yoga : i.e., thinking 'What is the use for me by enjoying etc. ? Let me be delighted in the Self by all means.' Conseently : not with much indulgence. That content whery one fixes pleasure as his goal only in sleep, fight etc.-that content is of the Tamas (Strand).

18.35 That Dhrti by which a foolish person does not give up, i.e. persists in, sleep, and sensuous indulgence through the activities of the mind, vital force etc., - that Dhrti is of the nature of Tamas. The terms fear, grief and depression indicate the objects generating fear, grief etc. That Dhrti by which one maintains the activities of the mind, the vital force etc., as a means for these, is of the nature of Tamas.

18.35 That firmness is mata, considered to be; tamasi, born of tamas; yaya, due to which; durmedha, a person with a corrupt intellect; na vimuncati, does not give up-indeed, holds fast to; svapnam, sleep; bhayam, fear; sokam, sorrow; visadam, despondency; eva ca, as also; madam, sensuality, enjoyment of objects-mentally holding these as things that must always be resorted to, considering them to be greatly important to himself, like a drunkard thinking of wine. The threefold division of action as also of agents according to the differences of the gunas has been stated. After that, now is being stated the threefold division of results and happiness:

18.35 That Dhrti by which a foolish person does not give up sleep, fear, grief, depression and passion, O Arjuna, is of the nature of Tamas.

18.35 That firmness is considered [Some editions read partha in place of mata (considered).-Tr.] to be born of tamas due to which a person with a corrupt intellect does not give up sleep, fear, sorrow, despondency as also sensuality.