Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) said: When we used to pray behind the Messenger of Allah (peace and blessings be upon him), we would say: Peace be upon Allah before His servants, peace be upon Jibreel and Mika'il, peace be upon Israfil, peace be upon so-and-so and so-and-so. Sayyiduna Ibn Mas'ud (may Allah be pleased with him) said: Then the Messenger of Allah (peace and blessings be upon him) turned towards us and said: "Allah Himself is As-Salam (the Source of Peace), (so why do you send peace upon Him?), when you sit in prayer (for Tashahhud), then say: «التحيات لله ........... إلى وعلی عباد الله الصالحين» meaning: 'All verbal and physical acts of worship (or all words of respect and glorification), all acts of worship (prayers, etc.), and all the best praises and charities are for Allah alone. Peace be upon you, O Prophet, and the mercy of Allah and His blessings. Peace be upon us and upon all the righteous servants of Allah.' When you say this, your greeting will reach every righteous servant of Allah in the heavens and the earth, wherever they may be. I bear witness that there is no deity except Allah, and I bear witness that Muhammad is His servant and Messenger. Then after this, let him supplicate for whatever he wishes."

Qasim bin Mukhaimara narrated that Alqama held my hand and narrated a hadith to me that Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) held his hand and said that the Messenger of Allah (peace and blessings be upon him) held Abdullah's hand and taught him how to recite the Tashahhud in prayer, and «(اَلتَّحِيَّاتُ لِلّٰهِ وَالصَّلَوَاتُ وَالطَّيِّبَاتُ ........... إِلَى الصَّالِحِيْن)» Zuhair said: I think he made him memorize it up to «‏‏‏‏أَشْهَدُ أَنْ لَا إِلٰهَ إِلَّا اللّٰهُ وَأَشْهَدُ أَنَّ مُحَمَّدًا عَبْدُهُ وَرَسُوْلُهُ» ‏‏‏‏, he became doubtful in the two testimonies. Then he said: When you have done or said so, then complete your prayer, and if you wish to stand up, then stand up, and if you wish to remain seated, then remain seated.