Aarti is a Hindu religious ritual of worship, a part of puja, in which light from wicks soaked in ghee (purified butter) or camphor is offered to one or more deities. Aartis also refer to the songs sung in praise of the deity, when lamps are being offered.Aarti can be simple to extravagant, but always involves flame or light. It is sometimes performed one to five times daily, and usually at the end of a puja (in southern India) or bhajan session (in northern India). It is performed during almost all Hindu ceremonies and occasions. It involves the circulating of an 'Aarti plate' or 'Aarti lamp' around a person or deity and is generally accompanied by the congregation singing songs in praise of that deva or person (many versions exist). In doing so, the plate or lamp is supposed to acquire the power of the deity. The priest circulates the plate or lamp to all those present. They cup their down-turned hands over the flame and then raise their palms to their forehead – the purificatory blessing, passed from the deva's image to the flame, has now been passed to the devotee.