How is the Tashahhud written in Arabic?

There are several versions of the tashahhud:

1. Ibn Mas'ud's tashahhud: "All salutations, prayers, and good things are for Allah. 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. I bear witness that there is no god but Allah, and I bear witness that Muhammad is His servant and His Messenger." To this, in the final tashahhud, the Salat (prayers) upon the Prophet, peace and blessings be upon him, are added.

2. The Salat upon the Prophet, peace and blessings be upon him: "O Allah, bless Muhammad and the family of Muhammad, as You blessed the family of Abraham, and bestow Your blessings upon Muhammad and the family of Muhammad, as You bestowed Your blessings upon the family of Abraham among the nations. Indeed, You are Praiseworthy, Most Glorious."

It is Sunnah to supplicate after the tashahhud and before the taslim.