奥义书——吠陀传统的哲学核心，阐明梵、真我、知识、行动与解脱的本质。十部主要奥义书，另加精选的毗湿奴派小奥义书。
Instruction on renunciation: what is left behind, what words are said, what is taken along, and how one lives afterward. The rite is described step by step — one of the books by which renunciation was actually performed.