וַיְהִ֣י מִֽמָּחֳרָ֗ת וַיִּקַּ֤ח הַמַּכְבֵּר֙ וַיִּטְבֹּ֣ל בַּמַּ֔יִם וַיִּפְרֹ֥שׂ עַל־פָּנָ֖יו וַיָּמֹ֑ת וַיִּמְלֹ֥ךְ חֲזָהאֵ֖ל תַּחְתָּֽיו׃ (פ)
Ao outro dia Hazael tomou um cobertor, molhou-o na água e o estendeu sobre o rosto do rei, de modo que este morreu. E Hazael reinou em seu lugar.
Metzudat Zion
This is a thick covering that was brought from it tassels. This Targum Yonatan as Genucha. this is also in Kings 2: 8:15. "and he took the netted piece of cloth" and Targum Yonatan translates it has Genucha.
Ibn Ezra
or in anything made from skin e.g., a coverlet, or a waterskin