It is reported from the wife of the Messenger, the Mother of the Believers Sayyidah Aishah (may Allah be pleased with her), that when she sat for the tashahhud she would recite: 'At-tahiyyat' (All verbal, financial and physical acts of worship and glorifications are for Allah. I bear witness that there is no god but Allah, He is alone and has no partner, and I bear witness that Muhammad (peace and blessings be upon him) is the servant of Allah and His Messenger. 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. Peace be upon you all).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 2840