Tashahhud

The Tashahhud (Arabic: تشهد‎‎) is the portion of salat (obligatory prayer) where the Muslim kneels on the ground facing Qibla in Mecca.

There is a Hadith, thought to be authentic (or Sahih) that says:

Ibn Mas'ud is reported to have said: The Messenger of Allah (pbuh) taught me tashahhud taking my hand within his palms, in the same way as he taught me a Sura of the Qur'an, and we also read it after his passing away.

التَّحِيَّاتُ لِلّٰهِ وَالصَّلَوَاتُ وَالطَّيِّبَاتُ، اَلسَّلَامُ عَلَيْكَ أَيُّهَا النَّبِيُّ وَرَحْمَةُ اللهِ وَبَرَكَاتُهُ، اَلسَّلَامُ عَلَيْنَا وَ عَلٰى عِبَادِ اللهِ الصَّالِحِيْنَ، أَشْهَدُ أَنْ لَا إِلٰهَ إِلَّا اللهُ، وَأَشْهَدُ أَنَّ مُحَمَّدًا عَبْدُهُ وَ رَسُوْلُهُ

This translates as:

"Salutations to God and prayers and good deeds. Peace be upon you, O Prophet, and the mercy of God and his blessings. Peace be on us and on the righteous servants of God. I bear witness that there is no god but God, and I bear witness that Muhammad is His servant and His messenger."

التحيات لله الزكيات لله والطيبات الصلوات لله السلام عليك ايها النبي و رحمة الله و بركاته السلام علينا و على عبادك الصالحين أشهد أن لا إله إلا الله وأشهد أنّ محمدا عبده ورسوله

This translates as:

"Blessed salutations, pure actions, good words and prayers to God. Peace be upon you, O Prophet, and the mercy of God and His blessings. Peace be on us and on the righteous servants of God. I bear witness that there is no god other than God and I bear witness that Muhammad is His servant and messenger."

التحيات المباركات الصلوات الطيبات لله، السلام عليك أيها النبي ورحمة الله وبركاته، السلام علينا، وعلى عباد الله الصالحين، أشهد أن لا إله إلا الله، وأشهد أن محمداً رسول الله

This translates as:

"Blessed salutations, prayers, good deeds to God. Peace be upon you, O Prophet, and the mercy of God and His blessings. Peace be on us and on the righteous servants of God. I bear witness that there is no god but God, and I bear witness that Muhammad is His messenger."

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Wikipedia