Wah-e-guru is a sacred sound and mantra in the Sikh tradition. It is used as a greeting, as a way to show respect to someone who is considered holy, and as a way to show reverence to the Sikh Gurus. The word "Wah-e-guru" is derived from the Sanskrit word "vāgūrūha", which means "voice of the guru". The Sikh Gurus have used this word to refer to the sound of their own voices. The word "Wah-e-guru" is also used as a ringtone on mobile phones. This ringtone can be downloaded from the internet or from the Sikh Gurus website.