a senior Forest Tradition monk named Ajahn Sing—along with his following of 50 monks and 100 nuns and laypeople—out of Ubon, which was under Tisso Uan's jurisdiction. Ajahn Sing refused, saying he and many of his supporters were born there, and they weren't doing anything to harm anyone. After arguments with district officials, the directive was eventually dropped. Institutionalisation and growth (1930s–1990s) Acceptance in Bangkok In the late 1930s, Tisso Uan formally recognized the Kammaṭṭhāna monks as a faction. However, even after Ajahn Mun died in 1949, Tisso Uan continued to insist that Ajahn Mun had never been qualified to teach because he hadn't graduated from the government's formal Pali studies courses. With the passing of Ajahn Mun in 1949, Ajahn Thate Desaransi was designated the de facto head of the Forest Tradition until his death in 1994. The relationship between the Thammayut ecclesia and the Kammaṭṭhāna monks changed in the 1950s when Tisso Uan become ill and Ajahn Lee went to teach meditation to him to help cope with his illness. Tisso Uan eventually recovered, and a friendship between Tisso Uan and Ajahn Lee began, that would cause Tisso Uan to reverse his opinion of the Kammaṭṭhāna tradition, inviting Ajahn Lee to teach in the city. This event marked a turning point in relations between the Dhammayut administration and the Forest Tradition, and interest continued to grow as a friend of Ajahn Maha Bua's named Nyanasamvara rose to the level of somdet and later the Sangharaja of Thailand. Additionally, the clergy who had been drafted as teachers from the Fifth Reign onwards were now being displaced by civilian teaching staff, which left the Dhammayut monks with a crisis of identity. Recording of forest doctrine In the tradition's beginning the founders famously neglected to record their teachings, instead wandering the Thai countryside offering individual instruction to dedicated pupils. However, detailed meditation manuals and treatises on Buddhist doctrine emerged in the late 20th century from Ajahn Mun and Ajahn Sao's first-generation students as the Forest tradition's teachings began to propagate among the urbanities in Bangkok and subsequently take root in the West. Ajahn Lee, one of Ajahn Mun's students, was instrumental in disseminating Mun's teachings to a wider Thai lay audience. Ajahn Lee wrote several books which recorded the doctrinal positions of the forest tradition, and explained broader Buddhist concepts in the Forest Tradition's terms. Ajahn Lee and his students are