Simple living and high thinking through acceptance of guru removes all unwanted habits and brings true peace.Listen — Srila Prabhupada Uvaca
Pradyumna: Oṁ namo bhagavate vāsudevāya. Oṁ namo bhagavate vāsudevāya. Oṁ namo bhagavate vāsudevāya. [devotees repeat] [chants verse; chants synonyms; devotees respond] mekhālajina-vāsāṁsi jaṭā-daṇḍa-kamaṇḍalūn bibhṛyād upavītaṁ ca darbha-pāṇir yathoditam [SB 7.12.4] [03:26] Translation: "The brahmacārī should carry in the hand pure kuśa grass, dressing himself regularly with a belt of straw, a deerskin garment, a bunch of hair, a staff and waterpot, as well as the sacred thread." Prabhupāda: mekhālajina-vāsāṁsi jaṭā-daṇḍa-kamaṇḍalūn bibhṛyād upavītaṁ ca darbha-pāṇir yathoditam [SB 7.12.4] So description of brahmacārī is going on here, the dress.
The dress should be as simple as possible. So the ajina means the deerskin. That is very essential, because formerly the brahmacārīs used to go to guru-gṛha. In those days the guru-gṛha was not palatial building.
Now if you haven't got palatial building, nobody will come. The different stage. But actually brahmacārī, the guru also, they were living in the forest, and brahmacārī used to go that guru-gṛha. So the deerskin in the forest is very essential.
Just like we take some blankets, we can spread anywhere and sit down. Deerskin, it is said that if you have got deerskin, you can sleep in the jungle; the snake will not touch you. That is the dravya-guṇa, the special effect of deerskin. Either tigerskin or deerskin, if you sit down, if you sleep, the snakes will not come.
This is also very scientific. Therefore, because the brahmacārīs used to live in the jungle, it was essential. But on the whole the shortcut recommended, not that gorgeous dress, very nice bedstead or... As far as possible, yāvad-artha, [SB 3.28.4] whatever is absolutely necessary...
That is Vedic civilization. Vedic civilization does not recommend that artificially you increase your necessities, life, and there is so much trouble. Just like nowadays in your country the machine is there in every respect. Even for shaving your cheek you require a machine.
So this increasing the artificial necessities of life is possible when there is no higher thought. After all, we are thoughtful. We have got better consciousness in the human form of life than the animals. Our consciousness is developed.