||God said to Moses and Aaron, 'Take a handful of furnace soot and throw it up in the air before Pharaoh's eyes.
Vayomer Adonay el-Moshe ve'el-Aharon kechu lachem melo chofneychem piach kivshan uzrako Moshe hashamaymah le'eyney Far'oh.
||It will settle as dust on all Egypt, and when it falls on man or beast anywhere in Egypt, it will cause a rash breaking out into boils.'
Vehayah le'avak al kol-erets Mitsrayim vehayah al-ha'adam ve'al-habehemah lishchin pore'ach avabu'ot bechol-erets Mitsrayim.
A double handful, where both hands are placed together and filled (cf. Leviticus 16:12; Ibn Ezra ad loc.; Rashi here translates it as joinchiez, a 'joined handful.'
(Rashi; Hirsch; Septuagint). Or, 'ashes' (Targum Yonathan; Vulgate), or 'cinders' or 'embers' (rescoldo in Spanish; Radak, Sherashim). Some sources state that it is the white ash that forms on burning embers (Lekach Tov; Sekhel Tov).
(Hirsch). Or 'blisters' (Sekhel Tov). Others have, 'boils breaking into open sores' (Septuagint). (See Bava Kama 80b).