عَنْ أَبِي هُرَيْرَةَ رَضِيَ اللَّهُ عَنْهُ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ: ((لَوْلَا أَنْ أَشُقَّ عَلَى أُمَّتِي لَأَمَرْتُهُمْ عِنْدَ كُلِّ صَلَاةٍ بِوُضُوءٍ وَمَعَ كُلِّ وَضُوءٍ بِسِوَاكٍ وَلَأَخَّرْتُ عِشَاءَ الْآخِرَةَ إِلَى ثُلُثِ اللَّيْلِ))
It is narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) said: If I did not fear hardship for my Ummah, I would have commanded them to perform ablution for every prayer, to use the miswak with every ablution, and to delay the ‘Isha prayer until one third of the night had passed.