The Sri Vaishnava mantra holds great significance in Sri Vaishnavism, a sect of Hinduism that focuses on devotion to Lord Vishnu through the teachings of Ramanuja. This mantra is known as the "Ashtakshara Mantra" and consists of eight syllables - "Om Namo Narayanaya". It is considered to be a powerful and sacred mantra that holds the key to liberation and ultimate union with Lord Vishnu.

The first syllable, "Om", represents the primordial sound of creation and is believed to be the essence of all mantras. It signifies the ultimate reality and connects the individual soul with the divine. The next two syllables, "Namo Narayanaya", are a salutation to Lord Vishnu, the supreme deity in Sri Vaishnavism. It is a way of showing reverence and surrender to the divine.

The remaining five syllables, "Na", "Ma", "Na", "Ra", and "Ya", are believed to be the five elements of the human body - earth, water, fire, air, and ether. By chanting these syllables, one is reminded of their physical existence and is encouraged to transcend it and focus on the divine. This mantra is thus seen as a means of purifying the mind and body, and preparing it for the ultimate union with Lord Vishnu.

The Sri Vaishnava mantra is also believed to have the power to remove all sins and obstacles in one's spiritual journey. It is said that by chanting this mantra with devotion and sincerity, one can attain moksha or liberation from the cycle of birth and death. It is also believed to bring peace, prosperity, and happiness to the individual and their surroundings.

In addition to its spiritual significance, the Sri Vaishnava mantra also has a deep philosophical meaning. The syllables "Na" and "Ma" represent the individual soul, while "Na" and "Ra" represent the supreme soul, Lord Vishnu. The syllable "Ya" signifies the union of the two, symbolizing the ultimate goal of Sri Vaishnavism - to merge with the divine and attain eternal bliss.

In conclusion, the Sri Vaishnava mantra holds great significance in Sri Vaishnavism as a means of connecting with Lord Vishnu, purifying the mind and body, and attaining liberation. It is a powerful mantra that encapsulates the essence of this sect of Hinduism and serves as a constant reminder of the ultimate goal of the individual - to unite with the divine.