Tulsi Vivaha celebrates the marriage of Tulsi Devi and the Supreme Lord. Tulsi Devi represents selfless devotion and She appears in the form of a sacred basil plant. Her devotion is so pure that a single leaf offered with love will satisfy the Lord and invoke His blessings.
Vrinda was a princess who worshipped Maha Vishnu with such intense devotion it made Her demon husband, Jalandhar, invincible. The pleas of the gods led to Maha Vishnu disguising Himself as Her husband to break Her vow of chastity and make Her husband vulnerable. Upon Her husband’s death the betrayal was revealed. She was so hurt by the Lord’s stone-heartedness, She cursed Him to become a stone. However, when Vrinda saw Maha Lakshmi’s pain at losing Her own husband, Vrinda immediately took back the curse. In memory of her selflessness, Maha Vishnu agreed to marry Her and promised to stay at Her Feet in the form of a Shaligram wherever She manifests as the sacred basil plant.