At the cremation ground, the chief mourner has to obtain the sacred fire from one who resides by the shmashana and light funeral pyres (chita) for a fee.
[3] Various Hindu scriptures also give details of how to select the site of shmashana: it should be on the northern side of the village with land sloping towards the south, it should be near a river or a source of water and should not be visible from a distance.
Ghee, camphor and sandalwood powder are sprinkled all over the body and the eldest son of the deceased does the last rituals, who lights up the pyre in shmashana, chanting the Namokar Mantra.
[7][8] In the Pali Canon discourses, Gautama Buddha frequently instructs his disciples to seek out a secluded dwelling (in a forest, under the shade of a tree, mountain, glen, hillside cave, charnel ground, jungle grove, in the open, or on a heap of straw).
The shmashana is also used for similar purpose by followers of Tibetan Buddhist traditions of Vajrayana, Dzogchen for sadhna of Chöd, Phowa, Zhitro, etc.