We used not to call Zaid bin Haritha the freed slave of Messenger of Allah ﷺ except Zaid bin Muhammad till the Qu'anic Verse was revealed: "Call them (adopted sons) by (the names of) their fathers. That is more than just in the Sight of Allah." (33.5) (Using translation from Bukhārī 4782)
أَنَّهُ كَانَ يَقُولُ مَا كُنَّا نَدْعُو زَيْدَ بْنَ حَارِثَةَ إِلَّا زَيْدَ بْنَ مُحَمَّدٍ حَتَّى نَزَلَتْ فِي الْقُرْآنِ {ادْعُوهُمْ لِآبَائِهِمْ هُوَ أَقْسَطُ عِنْدَ اللهِ} [الأحزاب 5]