Full Sharh — Sahih al-Bukhari 136
حَدَّثَنَا يَحْيَى بْنُ بُكَيْرٍ، قَالَ حَدَّثَنَا اللَّيْثُ، عَنْ خَالِدٍ، عَنْ سَعِيدِ بْنِ أَبِي هِلاَلٍ، عَنْ نُعَيْمٍ الْمُجْمِرِ، قَالَ رَقِيتُ مَعَ أَبِي هُرَيْرَةَ عَلَى ظَهْرِ الْمَسْجِدِ، فَتَوَضَّأَ فَقَالَ إِنِّي سَمِعْتُ النَّبِيَّ صلى الله عليه وسلم يَقُولُ " إِنَّ أُمَّتِي يُدْعَوْنَ يَوْمَ الْقِيَامَةِ غُرًّا مُحَجَّلِينَ مِنْ آثَارِ الْوُضُوءِ، فَمَنِ اسْتَطَاعَ مِنْكُمْ أَنْ يُطِيلَ غُرَّتَهُ فَلْيَفْعَلْ ".
English Translation
Narrated Nu`am Al-Mujmir:Once I went up the roof of the mosque, along with Abu Huraira. He performed ablution and said, "I heard the Prophet (ﷺ) saying, "On the Day of Resurrection, my followers will be called "Al-Ghurr-ul- Muhajjalun" from the trace of ablution and whoever can increase the area of his radiance should do so (i.e. by performing ablution regularly)
Source
Sahih al-Bukhari(صحيح البخاري)
Ablutions (Wudu')
Hadith Number
136