{تلك أمة } جماعة.
{قد خلت} مضت
{لها ما كسبت} من العمل.
{ولكم ما كسبتم ولا تسألون عما كانوا يعملون} يعني: يسأل كل عن عمله لا عن عمل غيره.
That nation has passed away like other communities. They gained whatever they did in their lives, earning either good or evil; and you will gain what you have earned. You will not be asked about what they did, and they will not be asked about what you do. No one is held to account for the disobedience of another, but everyone is rewarded according to their own actions. You should not be distracted from paying attention to your own behaviour by looking at what those before you did. Nothing will benefit anyone except his own good actions.