Quran 20:114 Taha, ayah 114 of 135

فَتَعَـٰلَى ٱللَّهُ ٱلْمَلِكُ ٱلْحَقُّ ۗ وَلَا تَعْجَلْ بِٱلْقُرْءَانِ مِن قَبْلِ أَن يُقْضَىٰٓ إِلَيْكَ وَحْيُهُۥ ۖ وَقُل رَّبِّ زِدْنِى عِلْمًا ۝١١٤

20:114 Then exalted be Allah, the True King! And hasten not (O Muhammad) with the Qur'an ere its revelation hath been perfected unto thee, and say: My Lord! Increase me in knowledge.