Musnad Ahmad 27:1626

Yunus narrated to us, Hammad—meaning Ibn Zayd—narrated to us, from Ayyub, from Nafi’, from Ibn Umar—Hammad said: "I do not know it except as attributed to the Prophet (marfu’)"—regarding His saying: {The Day when mankind will stand before the Lord of the worlds} [Al-Mutaffifin: 6]. He said: "The people will stand on the Day of Resurrection before the Lord of the worlds, Blessed and Exalted is He, in sweat up to the middle of their ears."