Abu Darda reported: The Messenger of Allah, peace and blessings be upon him, said, “I will be the first to be called to prostrate on the Day of Resurrection. I will be the first to be called to raise his head and I will look in front of me. I will recognize my nation among the nations, from behind me, to my right and to my left.” A man said, “O Messenger of Allah, how will you recognize your nation among the nations from Noah until now?” The Prophet said, “They will have radiant streaks from the traces of ablution. No one will have that but them. I will recognize them when they are given their records in their right hands, and I will recognize them as their descendants run before them.”
Source: Musnad Aḥmad 21623
Grade: Sahih li ghayrihi (authentic due to external evidence) according to Al-Albani
عَنْ أَبِي الدَّرْدَاءِ قَالَ قَالَ رَسُولُ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ أَنَا أَوَّلُ مَنْ يُؤْذَنُ لَهُ بِالسُّجُودِ يَوْمَ الْقِيَامَةِ وَأَنَا أَوَّلُ مَنْ يُؤْذَنُ لَهُ أَنْ يَرْفَعَ رَأْسَهُ فَأَنْظُرَ إِلَى بَيْنِ يَدَيَّ فَأَعْرِفَ أُمَّتِي مِنْ بَيْنِ الْأُمَمِ وَمِنْ خَلْفِي مِثْلُ ذَلِكَ وَعَنْ يَمِينِي مِثْلُ ذَلِكَ وَعَنْ شِمَالِي مِثْلُ ذَلِكَ فَقَالَ لَهُ رَجُلٌ يَا رَسُولَ اللَّهِ كَيْفَ تَعْرِفُ أُمَّتَكَ مِنْ بَيْنِ الْأُمَمِ فِيمَا بَيْنَ نُوحٍ إِلَى أُمَّتِكَ قَالَ هُمْ غُرٌّ مُحَجَّلُونَ مِنْ أَثَرِ الْوُضُوءِ لَيْسَ أَحَدٌ كَذَلِكَ غَيْرَهُمْ وَأَعْرِفُهُمْ أَنَّهُمْ يُؤْتَوْنَ كُتُبَهُمْ بِأَيْمَانِهِمْ وَأَعْرِفُهُمْ يَسْعَى بَيْنَ أَيْدِيهِمْ ذُرِّيَّتُهُمْ
21192 مسند أحمد بن حنبل
180 المحدث الألباني خلاصة حكم المحدث صحيح لغيره في صحيح الترغيب