Arabic (Original)
وَقَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ إِذَا قَامَ أَحَدُكُمْ مِنْ اللَّيْلِ فَاسْتَعْجَمَ الْقُرْآنُ عَلَى لِسَانِهِ فَلَمْ يَدْرِ مَا يَقُولُ فَلْيَضْطَجِعْ.
English Translation
The Messenger of Allah (peace be upon him) said: 'When one of you stands at night in prayer and the Quran becomes difficult on his tongue and he does not know what he is saying, let him lie down.'