Sayyiduna Abdullah bin Abbas (may Allah be pleased with him) says: The Messenger of Allah (peace and blessings be upon him) used to teach us the Tashahhud just as he would teach us the Qur’an. He (peace and blessings be upon him) used to say:“All greetings, blessings, prayers, and pure words 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 the Messenger of Allah.”
Translation of Tashahhud: All verbal, physical, and financial acts of worship full of blessings are only for Allah. O Prophet: Peace be upon you and the mercy of Allah and His blessings. Peace be upon us and upon the righteous servants of Allah (as well). I bear witness that there is no deity worthy of worship except Allah, and that Muhammad (peace and blessings be upon him) is the Messenger of Allah.