We never knew of Zayd by any other name except Zayd ibn Muhammad ﷺ, until Allah revealed Surah al-Ahzab, Verse 5.
A recollection related decades after Zayd's adoption.
Decades after Muhammad ﷺ adopted Zayd ibn Harithah RA and he became known as Zayd ibn Muhammad ﷺ, Allah revealed Surah al-Ahzab, verse 5: "Call children by their fathers. That is more just in the Sight of Allah." Abdullah ibn Umar RA later remarked that they had never known Zayd by any name other than Zayd ibn Muhammad ﷺ until this verse came down.
Muhammad ﷺ changed Zayd's name back to Zayd ibn Harithah following this revelation, establishing that adopted children retain their biological father's name and lineage.
Other events recorded in 5 AH. Their order within the year is not established; use the storyline above for the sequence.
We never knew of Zayd by any other name except Zayd ibn Muhammad ﷺ, until Allah revealed Surah al-Ahzab, Verse 5.
A recollection related decades after Zayd's adoption.
“Call children by their fathers. That is more just in the Sight of Allah.”
The verse instructing that children be called by their fathers' names, which led Muhammad ﷺ to rename Zayd back to Zayd ibn Harithah.