 It roams at night and terrifies people while they sleep, and possession by Alû results in unconsciousness and coma; in this manner it resembles creatures such as the mara, and incubus, which are invoked to explain sleep paralysis.In Akkadian and Sumerian mythology, it is associated with other demons like Gallu and Lilu.Stephen Herbert Langdon (1864) cites a translation of a cuneiform script by Major-General Sir H. C. Rawlinson.