The Tsa Yig (Classical Tibetan: བཅའ་ཡིག་, Wylie: bca' yig) is any monastic constitution[1] or code of moral discipline based on codified Tibetan Buddhist precepts.[2][3] Every Tibetan monastery and convent had its own Tsa Yig,[4] and the variation in Tsa Yig content shows a degree of autonomy and internal democracy.[5]
In Bhutan, the Tsa Yig Chenmo (Dzongkha: བཅའ་ཡིག་ཆེན་མོ་; Wylie: bca' yig chen-mo; "constitution, code of law"[6]) refers to the legal code enacted by founder Shabdrung Ngawang Namgyal around 1629.[7] Before the Shabdrung enacted the Tsa Yig as the national legal code, he had established the code as the law of Ralung and Cheri Monasteries by 1620.[8] The code described the spiritual and civil regime and provided laws for government administration and for social and moral conduct. The duties and virtues inherent in the Buddhist religious law (dharma) played a large role in the legal code, which remained in force until the 1960s.[9]