BG 18.34-36
But the firmness, O Arjuna, by which, from attachment desirous of fruit, one holdeth fast duty, desire and wealth, that firmness, O Pârtha, is passionate. That by which one from stupidity doth not abandon sleep, fear, grief, despair, and also vanity, that firmness, O Pârtha, is dark. And now the threefold kinds of pleasure hear thou from Me, O bull of the Bhâratas. That in which one by practice rejoiceth, and which putteth an end to pain;