Hindi gloss on Arjuna "Gudakesha" epithet from "Shree Bhagavad-Gita, Verse 2.9:
And while searching in Google I have found the following brilliant explanation by A.C. BhaktiVedanta Swami Prabhupada, His Tika to The Verse 1.24 of "Shree Bhagavad-Gita":
BG 1.24, Purport: "In this verse Arjuna is referred to as Guḍākeśa. Guḍākā means sleep, and one who conquers sleep is called guḍākeśa.
Sleep also means ignorance.
So Arjuna conquered both sleep and ignorance because of his friendship with Kṛṣṇa.
As a great devotee of Kṛṣṇa, he could not forget Kṛṣṇa even for a moment, because that is the nature of a devotee.
Either in waking or in sleep, a devotee of the Lord can never be free from thinking of Kṛṣṇa's name, form, qualities and pastimes.
Thus a devotee of Kṛṣṇa can conquer both sleep and ignorance simply by thinking of Kṛṣṇa constantly. This is called Kṛṣṇa consciousness, or samādhi".
Hindi cited from Shree Ramanuja-Sampradaya edition
of "Shree Bhagavad-Gita" -
A.C. BhaktiVedanta Swami Prabhupada cited from -