Mlaḥso

let - es gibt nicht (there is no) (Jastrow 1994:181)

PArm
*lāyṯ - there is not (Kogan 2015:399)
The fusion of *lā and *yīṯ(ay) is also attested in Akk. laššu (CAD L 108) and Arb. laysa (Lane 2684).