Al-Kahf - 18:73

قَالَ لَا تُؤَاخِذْنِي بِمَا نَسِيتُ وَلَا تُرْهِقْنِي مِنْ أَمْرِي عُسْرًا
[18:73]
He said: Blame me not for what I forgot, and do not constrain me to a difficult thing in my affair.
Moses said: "Rebuke me not for forgetting, nor grieve me by raising difficulties in my case."
(Moses) said: Be not wroth with me that I forgot, and be not hard upon me for my fault.