According to the Vedic theory, number 108 represents the whole of the universe, further defining the universal existence. It is believed that there are 108 holy sites in India. The list of Upanishads consisting of the four Vedas- Rigveda, Samaveda, Yajurveda and Atharvaveda is also 108.
It is also believed that the distance of earth from sun and moon is 108 times of its diameter. It is the theory outlined by the Vedic sages. According to them the distance between the human’s outer body and inner soul is 108 units. Hence every bead of the mala represent each stage of human life before attaining salvation.
There are 108 weak spots in a human body and these spots come together to form a link. Hence chanting the rosary or mala can actually lead to strengthening the inner and outer self.
Lord Shiva represents Shakti who possesses the cosmic energy. The cosmic dance by lord Shiva, also known as Bharatnatyam has 108 different poses or structures.
Hence, Rudraksh mala which represents Shiva, is used to chant the mantras.
From scientific to the divine theory, number 108 is considered auspicious for the followers of Sanatana Dharma.