﴿ لِيَحْمِلُوٓا۟ أَوْزَارَهُمْ كَامِلَةًۭ يَوْمَ ٱلْقِيَٰمَةِ ۙ وَمِنْ أَوْزَارِ ٱلَّذِينَ يُضِلُّونَهُم بِغَيْرِ عِلْمٍ ۗ أَلَا سَآءَ مَا يَزِرُونَ ﴾

“Hence, on Resurrection Day they shall bear the full weight of their own burdens, as well as some of the burdens of those ignorant ones whom they have led astray: oh, how evil the load with which they shall be burdened!”

(That they may bear their burdens) their sins (undiminished on the Day of Resurrection, with somewhat of the burdens) as well as the sins (of those whom they mislead) those whom they drove away from Muhammad (pbuh) and from the Qur'an and faith (without knowledge) or proof. (Ah! evil is that which they bear!) evil are the sins which they bear, i.e. those who were slain at the valley of Badr among the leaders of Quraysh.