Attaḥiyyātu lillāhi waṣṣalawātu, waṭṭayyibāt,
assalāmu `alayka 'ayyuhan-Nabiyyu
wa raḥmatullāhi wa barakātuh,
assalāmu `alaynā wa `alā ‘ibādillāhiṣ-ṣāliḥīn.
'Ash-hadu 'an lā 'ilāha 'illallāh
wa 'ash-hadu 'anna Muḥammadan `abduhu wa rasūluh.
All greetings of humility are for Allah, and all prayers and goodness.
Peace be upon you, O Prophet, and the mercy of Allah and His blessings.
Peace be upon us and upon the righteous slaves of Allah. I bear witness
that there is none worthy of worship but Allah, and I bear witness that
Muhammad is His slave and His Messenger.
Reference:
Al-Bukhari, Muslim 1/301. See also Al-Asqalani, Fathul-Bal 1/13