once
رَبِّ إِنِّي أَعُوذُ بِكَ أَنْ أَسْأَلَكَ مَا لَيْسَ لِي بِهِ عِلْمٌ وَإِلَّا تَغْفِرْ لِي وَتَرْحَمْنِي أَكُن مِّنَ الْخَاسِرِينَ
Meaning
«My Lord, I seek refuge in You from asking that of which I have no knowledge. And unless You forgive me and have mercy upon me, I will be among the losers»
Source and references
11:47The reference is copied from the edition; separate editorial verification is not complete yet.
Source edition: Supplications from the Quran. Open source ↗