Arabic

daṯaˀiyy- - spring rain (Dozy I 424)

PS
*daṯˀ- - grass; herb; spring (Fronzaroli 1965a: 142, 148, 150, Fronzaroli 1968: 275; Fronzaroli 1969a: 275, 289, 299; Kogan 2011: 200; Kogan 2012: 231)