The soul according to Sikhism is an entity in our body because of which the body can sustain life. On the departure of this entity from the body, the body becomes lifeless - No amount of manipulations to the body can make the person make any physical actions. The soul is the ‘driver’ in the body. It is the ‘roohu’ or spirit, the presence of which makes the physical body alive.
|SGGS Page 19 Full Shabad|
|The empty body is dreadful, when the soul goes out from within.|
sunjee dayh daraavanee jaa jee-o vichahu jaa-ay.
The burning fire of life is extinguished, and the smoke of the breath no longer emerges.
bhaahi balandee vijhvee Dhoo-o na niksi-o kaa-ay.
The five relatives (the senses) weep and wail painfully, and waste away through the love of duality.
panchay runnay dukh bharay binsay doojai bhaa-ay.
Many religious and philosophical traditions, support the view that the soul is the ethereal substance — a spirit; a non material spark — particular to a unique living being. Such traditions often consider the soul both immortal and innately aware of its immortal nature, as well as the true basis for sentience in each living being. The concept of the soul has strong links with notions of an afterlife, but opinions may vary wildly even within a given religion as to what happens to the soul after death. Many within these religions and philosophies see the soul as immaterial, while others consider it possibly material.
In Hinduism, the Sanskrit word most closely corresponding to soul is "Atman", which can mean soul or even God. It is seen as the portion of Brahman within us. Hinduism contains many variant beliefs on the origin, purpose, and fate of the soul. For example, advaita or non-dualistic conception of the soul accords it union with Brahman, the absolute uncreated (roughly, the Godhead), in eventuality or in pre-existing fact. Dvaita or dualistic concepts reject this, instead identifying the soul as a different and incompatible substance.