87:7 save what God may will [thee to forget]* - for, verily, He [alone] knows all that is open to [man's] perception as well as all that is hidden [from it]*
Muhammad Asad (The Message Of Quran)
Dictionaries
Ejtaal Arabic Almanac: Lane's Lexicon, Hans Wehr, Lisan al-Arab and others
AND LO!* We caused a group of unseen beings to incline towards thee, [O Muhammad,]* so that they might give ear to the Qur'an; and so, as soon as they became aware of it,* they said [unto one another], Listen in silence!" And when [the recitation] was ended, they returned to their people as warners.*