(A man from the Ansar) The Ansar said, "Every nation has followers and (O Prophet) we have followed you, so invoke Allah to let our followers be considered from us (as Ansar like ourselves)." So the Prophet (ﷺ) said, "O Allah! Let their followers be considered as Ansar like themselves."
حَدَّثَنَا آدَمُ، حَدَّثَنَا شُعْبَةُ، حَدَّثَنَا عَمْرُو بْنُ مُرَّةَ، قَالَ سَمِعْتُ أَبَا حَمْزَةَ ـ رَجُلاً مِنَ الأَنْصَارِ ـ قَالَتِ الأَنْصَارُ إِنَّ لِكُلِّ قَوْمٍ أَتْبَاعًا، وَإِنَّا قَدِ اتَّبَعْنَاكَ، فَادْعُ اللَّهَ أَنْ يَجْعَلَ أَتْبَاعَنَا مِنَّا. قَالَ النَّبِيُّ صلى الله عليه وسلم " اللَّهُمَّ اجْعَلْ أَتْبَاعَهُمْ مِنْهُمْ ". قَالَ عَمْرٌو فَذَكَرْتُهُ لاِبْنِ أَبِي لَيْلَى. قَالَ قَدْ زَعَمَ ذَاكَ زَيْدٌ. قَالَ شُعْبَةُ أَظُنُّهُ زَيْدَ بْنَ أَرْقَمَ.
(A man from the Ansar) The Ansar said, "Every nation has followers and (O Prophet) we have followed you, so invoke Allah to let our followers be considered from us (as Ansar like ourselves)." So the Prophet (ﷺ) said, "O Allah! Let their followers be considered as Ansar like themselves."
— Sahih al-Bukhari, Hadith 3625