Al-Mu'jam al-Awsat 3116 — the tashahhud of the Prophet ﷺ was

It is narrated from Sayyiduna Abdullah bin al-Zubayr (may Allah be pleased with them both) that the tashahhud of the Prophet (peace and blessings be upon him) was: 'Bismillahi wa billahi khayril-asma'. At-tahiyyatu lillahit-tayyibatus-salawat. Ashhadu an la ilaha illallahu wahdahu la sharika lah, wa ashhadu anna Muhammadan abduhu wa rasuluh, arsalahu bil-haqqi bashiran wa nadhira, wa annas-sa'ata atiyatun la rayba fiha. As-salamu alayka ayyuhan-nabiyyu wa rahmatullahi wa barakatuh. As-salamu alayna wa ala ibadillahis-salihin. Allahummaghfir li wahdini' (In the name of Allah and with the help of Allah, the best of names. All worship of the tongue, of wealth and of the body is for Allah alone. I bear witness that there is none worthy of worship except Allah, alone, without any partner, and I bear witness that Muhammad (peace and blessings be upon him) is His servant and His Messenger, whom He sent with the truth as a bearer of glad tidings and a warner, and that the Hour is coming, there is no doubt about it. Peace be upon you, O Prophet, and the mercy of Allah and His blessings. Peace be upon us and upon the righteous servants of Allah. O Allah, forgive me and guide me.)
This was (the tashahhud) in the first two rak'ahs.
This hadith is not narrated from Sayyiduna Abdullah bin al-Zubayr (may Allah be pleased with them both) except with this chain, and Ibn Lahi'ah (may Allah have mercy on him) is alone in narrating it.