Amharic

əskä/əstä - until, up to, till, as far as (AED 1174)

See Lipiński 1997:464.

PS
*ˀiš - to, for (Arakelova 2001:29)
The reconstruction is not entirely certain. Akk. iš is only attested in a specific group of texts (the archaic liver models from Mari); moreover, it is sometimes considered to be an equivalent of the terminative marker -iš. Throughout EthS this preposition can only be distinguished as a part of other prepositions, for which one may also suppose other ways of division. See Arakelova 2001:29–30.