Hadith 205

Bulugh al-Maram

Book 2: The Book of Prayer
Hadith 205
وَلِأَحْمَدَ : { أَنَّ اَلنَّبِيَّ ‏- صلى الله عليه وسلم ‏-عَلَّمَهُ اَلتَّشَهُّد , وَأَمَرَهُ أَنْ يُعَلِّمَهُ اَلنَّاسَ } .‏ 1‏
And in the narration of Ahmad:

'The Prophet (ﷺ) taught him at-Tashahhud and ordered him to teach it to the people.'