Up means close and nayan means to take away.
To be taken close to the Guru (teacher) means the Upanayan sanskar (Yagyopavit Sanskar). Even today this tradition is practiced. Janaeu means Yagyopavit has three main sources and
these three gods- trinities- Brahma, Vishnu, are the symbols. The child
receives strength, energy and strength from this sacrament. In ancient times,
under the Varnashram arrangement, there has been a rule to perform various
Upanayan rites for different categories (varnas). According to the scriptures, Upanayan sanskar is done during the
eighth year of the Brahmins people, the eleventh of Kshatriya people and Vaishy
in the twelfth year. The Shudra category was not considered to be the officials
of Upanishad Sanskar. Those who did not attend the Upanayan Sanskar until the
maximum prescribed age were called vrati
and it is also considered as dishonourable in Indian society.
Significance of Sanskar:
The Rig Veda
showcases that some of the characteristics of Upanayan Sanskaras described in
the Grihayasutras were also known at that time. There is a praise of Yup
(sacristy) like a young man "Here the young man is coming, he is
well-equipped When he is born, he receives the importance; Hey Clever sages,
you have reverence for God in your heart and are healthy thoughts, raise it up!
"There is the same word present in" Unnayati "here, which is in
the Upanayan. Many legends have cited this mantra, such as Ashvalayan,
Paraskar. There is a mention of the words- 'Brahmachari' and 'Brahmacharya' in
the description in the Taitriya Samhita. When Brahmin is born, he is indebted
of the three classes’ people; one is during Brahmacharya towards the sages
(indebted), in the Yajna towards gods and in the saints towards ancestors; who
so ever conducts Yajna, who has son and the person who stays along with his
teacher, hence these get free from all the debts. Description of Upaniyan and
Brahmacharya texts are available in Vedas and Brahmin literature.