Thabit b. Qais was the orator of the Ansar, when this verse was revealed: the rest of the hadith is the same with the exception that there is no mention of Sa'd b. Mu'adh in it.
كَانَ ثَابِتُ بْنُ قَيْسِ بْنِ شَمَّاسٍ خَطِيبَ الأَنْصَارِ فَلَمَّا نَزَلَتْ هَذِهِ الآيَةُ بِنَحْوِ حَدِيثِ حَمَّادٍ وَلَيْسَ فِي حَدِيثِهِ ذِكْرُ سَعْدِ بْنِ مُعَاذٍ