﴿ وَيَوْمَ تَقُومُ ٱلسَّاعَةُ يَوْمَئِذٍۢ يَتَفَرَّقُونَ ﴾

“And when the Last Hour dawns - on that Day will all [men] be sorted out:”

And on the Day when the Hour comes that day yawma’idhin is repeated for emphasis they believers and disbelievers shall be separated.