(Al-Muthwaffifeen) 83 : 5
لِيَوْمٍ عَظِيمٍ
For a great Day.
The Day mentioned here is the Day of Judgement, in which the life of everyone will be evaluated by reading the book of deeds fastened around his/her neck. See explanation 70: 4; 73: 17; and 78: 1–2.