During his monastic years, the immigration of numbers of monks from Burma was introducing the more rigorous monastic discipline characteristic of the Mon sangha. Influenced by this and his own understanding of the Tipitaka, Prince Mongkut (as a monk) began a reform Buddhist movement by founding a new monastic order at Wat Samorai. This was the Dhammayuttika ("yoked to the Dhamma") Nikaya, which kept a stricter monastic discipline than the rest of the Thai sangha (this included not using money , not storing up food and not taking milk in the evening).