How does Buddhism view dreams?

Sanskrit svapna, Pali supina. In sleep, the mind and its place (the role of the mind) present all kinds of things to the object (boundary), just as real as seeing the reality, which is called a dream. According to the classic book of Wen Lan, a fan of Ba Li Wang, there are six reasons for dreaming: wind disease, gallbladder disease, phlegm disease, ghost attraction, habit and omen, among which only the omen is true and the rest are false. According to the 37-year-old Mahayana Sutra, those who still have memories after waking up and can tell others are called complete dreams. As for its self-nature (the essence of dreams), there are various opinions such as intention, thinking, five meanings, mind and mind. It also lists the reasons for dreaming, such as five reasons (doubt, communication, separation, Zeng Gengnian, non-human introduction, or other abilities, Zeng Gengnian, being, being, and various diseases) and seven reasons (seeing, hearing, receiving, looking, being, and various diseases). Among the three realms, dreams only occur in the realm of desire, not in the realm of color and achromatic. In the realm of desire, saints (ordinary people) and former fruit from different backgrounds all have dreams, but the Buddha has no dreams. The only-knowing school thinks that sleeping deeply is unconscious, and sleeping shallowly is conscious, so dreaming is because of its function. In addition, the only known Sect also uses dreams to express the emptiness of the three natures of the only known Sect. It is said that all departments advocate that what happened in the dream is practical, so it has the function of retribution; But the metaphorical teacher denied this statement; "Great Wisdom" Volume VI also said that dreams are not practical, and they are all delusions. However, dreams can also predict the future, and dream retrieval has been very popular in India since ancient times. In Buddhist scriptures, there are many classics about recording dreams. According to the narrative in the Practice Book, The First-class Buddhist Biography of past lives Causality, when Sakyamuni became a monk and entrusted the fetus, Mrs. Mo Ye dreamed that the Bodhisattva entered the fetus by a white elephant; According to the records under the Maya Sutra and after the Nirvana Sutra, there are dreams about the entry and exit of Buddhism; According to Swasti's dream of ten things, the king of Persia foresaw the future social state with ten dreams; In addition, according to the book "The Cause of the Orphaned Daughter's Old Age" and "The Theory of Abandoning Everything in Nine Years", the ten dreams that King Li Zhi saw also hinted at the general trend of Buddhism development after the liberation. In addition, the Samadhi Sutra of the boat also talks about seeing Buddha in a dream. "Pipa Shajuan 12" is very good, and dreams are divided into four categories: (1) Four discordant dreams, dreaming of landslides, flying in the void, or being chased by thieves and evil beasts, all of which are caused by physical disharmony. (2) dream of foresight, dream of previous experiences. (3) The dream of heaven and man is to dream that heaven and man show their good and evil behaviors with the cultivation of good and evil. (4) If you want to dream, you must dream of good and evil according to the intention of good and evil. The same book also said that among the four, the dream caused by the "four major disagreements" and "foresight" is illusory, while the "dream of heaven and man" and "dream" are real; Not all dreams are rewarded. According to the records of Dafang and other Dalagni Scriptures for one year, the twelve dream kings, such as Piadiluo, are the guardians of the Dalagni Sutra, and now they will be protected in the dreams of those who accept it. According to Wang Jingjuan, who won the victory in the second year of Jin Guangming, Bodhisattva Miao Zhuang saw a bright golden drum in her dream and declared "confession", which is the story of "Golden Drum Statement". The Heart Sutra of Bodhisattva gives four kinds of good dreams, that is, if you see lotus flowers, umbrellas, moon wheels and Buddha statues in your dreams, they are all good dreams. In addition, most of the more famous dream sutras in Buddhist scriptures are foretells of the future, such as Ananda's Seven Dream Sutras and Ananda's Seven Nightmares: (1) The fire in the pond is terrible. (2) There is no sun, moon and stars. (3) Being a monk lies in an unclean pit and stands out in white at home. A group of pigs came to Lin Tan. (5) It is not important to wear Mount Sumi. (6) The elephant abandons the baby elephant. (7) The Lion King had seven hairs on his head and died on the ground. All the animals were scared when they saw it, and then they saw the worm coming out of their bodies and eating it. These are all signs of the decline of Buddhism in the afterlife. In addition, for example, the Eight Dream Classics and the Great Dream Classics (Sixteen Dream Classics) contained in the ninth volume of Zabao Classics all contain dreams that seem difficult to understand, but actually have symbolic significance. Generally speaking, Hinayana Buddhist scriptures and Mahayana Buddhist scriptures have different views and explanations of dreams. Hinayana Buddhist scriptures mostly imply major events and changes through dreams. For example, before the Buddha conceived, Mrs. Mahamoyev dreamed that a bodhisattva rode a white elephant into the uterus; Before the death of the Buddha, Mrs. Mahamoyev had five nightmares, such as Sumeru landslide and the exhaustion of the four seas. Or the ten dreams of the Persian king, the ten dreams of the chestnut king and the seven dreams of Ananda mentioned above are all Hinayana classics of the original view of nature. Mahayana Buddhist scriptures mostly explain the essence of dreams and expound fundamental issues such as entity existence, good and evil. Or use its illusion to compare the illusion of law. Such metaphors are numerous in Mahayana classics, which are critical and metaphysical. 【 Miscellaneous Agama Volume 7, Dabao Classic Volume 73, Volume 74, Great Wisdom Volume 6, Volume 64 】