The recitation of the Achamana mantra is a way of praising God as the Illuminator of All. It expresses gratitude for the gift of light, which allows us to perceive the world, as well as the gift of intelligence, which enables us to comprehend our existence. It acknowledges God's infinite beneficence in bestowing these gifts upon us.
The ultimate purpose of human life, according to Hindu philosophy, is the realization of the four Purusharthas: righteousness (Dharma), wealth (Artha), pleasure (Kaama), and salvation (Moksha). These virtues can only be attained through the knowledge of God's omnipresence. Therefore, when praying for the fulfillment of our proper end, we are essentially seeking a deeper understanding of God's omnipresence.
The sipping of water serves multiple functions within the Achamana ritual. Firstly, it cools and clears the throat, preparing it for the recitation of the Sandhya mantras. Secondly, it awakens the vital powers of the body, dispelling lethargy and drowsiness, ensuring that the mantras are recited with vitality. Finally, it serves as a reminder of our dependence on God's grace for our survival. Water is seen as a gift from God, essential for our existence, and by sipping water, we acknowledge this dependence.
Overall, the Achamana ritual helps in purifying the body, mind, and spirit, aligning them for the practice of meditation and spiritual experiences. It symbolizes the integration of physical, vital, and mental aspects of an individual, preparing them for the profound spiritual journey of Upaasanaa.