Nandi is the guardian deity of Kailash, the abode of Lord Shiva. The statue of Nandi, the Bull, is generally seen in a sitting posture on a raised platform with discipline and calmness at the entrance of the temple of Lord Shiva as the guard or doorman. He patiently waits for the Lord while gazing at the sanctum, demonstrating that individual souls should always be focused and surrendered to the Supreme Lord in all circumstances, without having any material desires. He symbolizes loyalty, truth, and righteousness, thus, preserving Dharma. Watchfulness and virility are the most important qualities of the Bull, that make him the perfect vaahan for Lord Shiva, the destroyer of the material world, to ride. The alertness of Nandi tells us the importance of being in the present moment (mindfulness). He is the head of all the attendants (Ganas) of Lord Shiva and is also considered to be the guardian of four-legged animals.

Having a round body, a hump appearing as a huge mountain, and heavy shoulders signify his strength and capacity to bear a heavy load. Being very dear to the Lord, the divine Bull is always decked with fascinating ornaments on his back, neck, and sharp horns.

Why does Nandi sit in front of Shivling?

Nandi is always depicted sitting outside the sanctum of Lord Shiva, facing the Lord. He patiently waits for his master outside the temple as if ready to serve the Lord whenever he wants his service. This shows how Nandi always remains absorbed in the thoughts of Lord Shiva and is eager to please his master. A practicing devotee can learn from the attitude of Nandi that the only qualification needed to please the Supreme Lord is his sincerity and dedication to serve Him in all circumstances.