Jabir said

Allah's Messenger ﷺ used to teach us the tashahhud just as he would teach us a sura of the Qur’an, saying, “In the name of Allah and with His grace. The adorations of the tongue, acts of worship and all good things are due to Allah. Peace be upon you, O Prophet, and Allah’s mercy and blessings. Peace be upon us and upon Allah’s upright servants. I testify that there is no Allah but Allah, and I testify that Muhammad is His servant and Messenger. I ask Allah for paradise, and I seek refuge in Allah from hell.” Nasa’i transmitted it.