وَعَنْ أَبِي هُرَيْرَةَ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ لِبِلَالٍ عِنْدَ صَلَاةِ الْفَجْرِ: «يَا بِلَالُ حَدِّثْنِي بِأَرْجَى عمل عملته فِي الْإِسْلَام فَإِنِّي سَمِعت دق نعليك بَين يَدي الْجَنَّةِ» . قَالَ: مَا عَمِلْتُ عَمَلًا أَرْجَى عِنْدِي أَنِّي لم أتطهر طهُورا مِنْ سَاعَةٍ مِنْ لَيْلٍ وَلَا نَهَارٍ إِلَّا صَلَّيْتُ بِذَلِكَ الطُّهُورِ مَا كُتِبَ لِي أَنْ أُصَلِّيَ

Abu Huraira reported that God's Messenger said to Bilal at the dawn prayer, “Tell me, Bilal, of the action you have done since becoming a Muslim which is most calculated to cause hope in you, for I heard the sound of your sandals in front of me in paradise.” He replied, “I have done no action more calculated, in my opinion to cause hope than that I have never performed ablution at any hour of the night or day without immediately praying what was ordained for me to pray.” (Bukhari and Muslim.)