Verse 2.62-63

Verse 2.62: “In a person constantly thinking about objects of sense there is born an attachment for them: from attachment springs passion; from (thwarted) passion arises wrath;

Verse 2.63: “From wrath ensues bewilderment; from bewilderment, confusion in accumulated knowledge (smriti); from failure of accumulated knowledge, crash of discernment: with discernment crashed, he perishes outright. (321)

Commentary called Jnaneshwari by Jnaneshwar:

Even though there may be (mere) remembrance of sense-objects in the heart, it brings about association with them, even in the case of those that harbour no attachment for them. Such association directly creates passions and from passions arises wrath. From wrath ensues bewilderment. Bewilderment destroys memory just as a strong breeze extinguishes the flame of a lamp, or just as after sunset the night swallows the splendour of the sun, to that same state (the blankness) the being is reduced with the loss of memory. Thus blinded by the darkness of ignorance the intellect gets overcome with confusion. O Arjuna, the intellect then gets deluded and giddy just as one born blind takes to running and gets helpless and keeps on running about aimlessly, with the intellect getting hard-hit owing to loss of memory.

In this way right thinking gets its bottom knocked off. Just as the body gets still with the loss of life so becomes the state of one with the loss of intellect. Therefore, know ye, O Arjuna, just as a spark when applied to a piece of fire-wood gets spread out and capable of reducing to ashes the entire Universe in the same way should the mind ever come to think even casually of sense-objects, it brings upon itself (such a big) downfall.