In Buddhism, the three marks of existence are three characteristics (Pali: tilakkhaṇa; Sanskrit: trilakṣaṇa) shared by all sentient beings, namely impermanence (anicca), dissatisfaction or suffering (dukkha), and non-self (anattā). These three characteristics are mentioned in verses 277, 278 and 279 of the Dhammapada.
The three marks are:
Anicca (Sanskrit anitya) means "inconstancy" or "impermanence". All conditioned things (saṅkhāra) are in a constant state of flux. The appearance of a thing ceases as it changes from one form to another. When a leaf falls to the ground and decomposes its relative existence and appearance transform, and its components go into a different form, perhaps a new plant. Regarding permanence, Buddhism teaches the middle way, avoiding the extreme views of eternalism and nihilism.
The Three Seals Law or Three Seals Code, (Thai: กฎหมายตราสามดวง kotmai tra sam duang), is a collection of law texts compiled in 1805 on the orders of King Rama I of Siam. Most of the texts were laws from the Ayutthaya era which had survived the destruction of Ayutthaya in 1767. The compilation remained the working law of Siam until replaced by modern law codes in the early 20th century. The texts are an important source for the history of the Ayutthaya Kingdom and legal history in Asia.
King Rama I paid attention to the preservation of Thai texts that had survived the destruction of Ayutthaya in 1767, including the royal chronicles and religious texts. Shortly after completing a revision of the Tipiṭaka, the Buddhist canonical scriptures, in 1804, he turned his attention to the laws.
After a court awarded a divorce to a woman, Amdaeng Pom, even though she had committed adultery, her husband, Bunsi, sent a petition, claiming the judge had been biased. On examination, all copies of the marriage law showed the woman had the legal right to this divorce. Suspecting that this and others laws had been “modified,” King Rama I ordered a revision of all existing law texts: