´Abdullah bin Mas'ud narrated:` "Allah's Messenger taught us, that when we sit for every two Rak'ah we should say: (At-Tahyyatulillah, was-salawatu wattayybaat. As-salamu alaika ayyuhannabiyyu wa rahmatullahi wa barakatuhu, as-salamu alaina wa ala ibadillahis-salihin. Ashhadu an la ilaha illallah wa ashadu anna Muhammadan abduhu wa Rasuluh.) 'All greetings, prayers, and pure words are Allah. Peace be upon you O Prophet, and Allah's mercy and His blessings. Peace be upon us and all of the righteous worshippers of Allah. I testify that nne has the right to be worshipped but Allah, and I testify that Muhammad is Allah's servant and Messenger.'"
Hadith Referenceسنن ترمذي / كتاب الصلاة / 289
Hadith Gradingالألبانی:صحيح، الإرواء (336) ، وانظر ابن ماجه (899) | زبیر علی زئی:إسناده ضعيف, خصيف ضعیف (د 266) والرؤيا لاحجة فيه والباقي صحیح .