The Dasavara (Thatsaphon), the ten blessings, is the first episode of the 13 episodes of the Vessantara Jataka which contains 16 fascicles. While residing in Kapilavatthu the Buddha delivered a sermon to his father, King Suddhadana, Princess Sakya and the Sangha. He described his last existence as Prince Vessantara and the story of his mother, Queen Phusati who was the queen of Indra. Before finishing her time in heaven for being born as a human being in the world, she asked Indra for the ten blessings, and he gave her the ten blessings by pouring holy water on the palms of the queen’s hands.
Colophon:
CS 1265, a ka mao year, on the twelfth waning-moon day of the tenth [lunar] month, the third day of the week
[The writing of this manuscript was completed] in CS 1265, a ka mao year, on the twelfth waning-moon day of the tenth [lunar] month, the third day of the week, at the time of the evening drum. Monk Sommana wrote the manuscript at Wat Si Bun Rüang, Ban Hong, the southern part of Hariphunchai. May the merit be transferred to my family members, my teachers, God Indra, Brāḥmā, Lord of Death, all beings, the four world guardians, Goddess of Earth, and God Vessuvaṇṇa.
Nibbānaṃ paramaṃ sukkhaṃ niccaṃ.
May I definitely become a Buddha.
Other notes:
The date corresponds to Tuesday, 21 July 1903 (1265 Ashadha 27).