𐡔

Arabic shīn

In the Arabic alphabet, according to McDonald (1986), "there can be no doubt that ش‎‎ is a formal derivative of سٕ and that س is descended from 𐡔." but unlike the Hebrew ש Sīn/Šīn and Aramaic 𐡔‎‎ Sīn/Šīn, Arabic س Sīn is considered a completely separate letter from ش Šīn /ʃ/.