長阿含經 10.p44

10.p44

“What are five things to produce? The noble person’s five knowledges regarding samādhi: The internal and external knowledge that arises from the present and future happiness of cultivating samādhi. The internal and external knowledge that arises from the noble person’s lack of craving. The internal and external knowledge that arises from the practices cultivated by Buddhas and noble people. The internal and external knowledge that arises from the state of tranquility while alone and without a companion. The internal and external knowledge that arises from entering and emerging from samādhi with a unified mind.