1380
Śrīmad-Bhāgavatam
[Canto 4, Ch. 29]
vimūḍhā nānupaśyanti paśyanti jñāna-cakṣuṣaḥ
“The foolish cannot understand how a living entity can quit his body, nor can they understand what sort of body he enjoys under the spell of the modes of nature. But one whose eyes are trained in knowledge can see all this.” (Bg. 15.10)
The living entities are merged into the air of life, which acts in different ways for circulation. There is  prāṇa ,  apāṇa ,  udāṇa ,  vyāṇa , and  samāṇa , and because the life air functions in this fivefold way, it is compared to the five-hooded serpent. The soul passes through the  kuṇḍalinī-cakra  like a serpent crawling on the ground. The life air is compared to  uraga , the serpent.  Pañca-vṛtti  is the desire to satisfy the senses, attracted by five sense objects—namely, form, taste, sound, smell and touch.
TEXT 7
बृहद्धलं मनो विद्यादुभयेन्द्रियनायकम् ।
पञ्चालाः पञ्च विषया यन्मध्ये नवस्वं पुरम् ॥ ७ ॥
bṛhad-balaṁ mano vidyād ubhayendriya-nāyakam pañcālāḥ pañca viṣayā yan-madhye nava-khaṁ puram
bṛhat-balam —very powerful;  manaḥ —the mind;  vidyāt —one should know;  ubhaya-indriya —of both groups of senses;  nāyakam —the leader;  pañcālāḥ —the kingdom named Pañcāla;  pañca —five;  viṣayāḥ —sense objects;  yat —of which;  madhye —in the midst;  nava-kham —having nine apertures;  puram —the city.
TRANSLATION
The eleventh attendant, who is the commander of the others, is known as the mind. He is the leader of the senses both in the acquisition of knowledge and in the performance of work. The Pañcāla kingdom is that atmosphere in which the five sense objects are enjoyed. Within that Pañcāla kingdom is the city of the body, which has nine gates.
PURPORT
The mind is the center of all activities and is described here as  bṛhad-bala , very powerful. To get out of the clutches of  māyā , material existence,