Harari

əsāt, isāt - fire (EDH 34)

Also in Ancient Harari isat (Wagner 1983:274), isāt, isat (Cerulli 1936:409)

PS
*ˀiš(-āt)- - fire (Fronzaroli 1965a: 138, 145, 149; Kogan 2011: 194–195; Kogan 2015: 39; HALOT 92, CDG 44)