Nirvana is a concept found in several Indian religions, including Hinduism, Buddhism, Jainism, and Sikhism. In Hinduism, it is the union of or the realization of the identity of Atman with Brahman, depending on the Hindu tradition. In Buddhism, nirvana refers to the abandonment of the 10 fetters, marking the end of rebirth by stilling the fires that keep the process of rebirth going. In Jainism, nirvana is the release of a soul from karmic bondage and samsara. The literal meaning of Nirvana is blowing out, putting out, or extinguishing a lamp or fire.

In Hinduism, nirvana is more commonly called moksha, which is the reuniting with Brahman, the universal God or universal soul. A soul reaches this state after it has reached the upper castes, eliminated bad karma, and removed itself from all earthly distractions. When a soul finally escapes the karmic cycle, it becomes one with Brahman when the last bodily incarnation dies. This is a higher plane of existence that transcends the suffering of earthly life.

In Buddhism, nirvana denotes the state of freedom in which all desires are extinguished and suffering becomes resolved. It arises when the mind is freed from its attachments to worldly things and reaches a state of peace, joy, and happiness. The Buddha suggested that Nirvana was a state of bliss and freedom. It is often used to refer to the extinction of desire, hatred, and ignorance and, ultimately, of suffering and rebirth.

In summary, Nirvana is a state of ultimate liberation from suffering and rebirth, which is the ultimate goal of several Indian religions. In Hinduism, it is the reuniting with Brahman, while in Buddhism, it is the abandonment of the 10 fetters and the state of freedom in which all desires are extinguished.