بُلُوغُ الْمَرَامِ
Bulugh al-Maram 315
The Book of Prayer
وَلِمُسْلِمٍ : عَنْ اِبْنِ عَبَّاسٍ - رضى الله عنه - قَالَ : { كَانَ رَسُولُ اَللَّهِ يُعَلِّمُنَا اَلتَّشَهُّدَ: " اَلتَّحِيَّاتُ اَلْمُبَارَكَاتُ اَلصَّلَوَاتُ لِلَّهِ ... } إِلَى آخِرِهِ . [1]
In Muslim's narration from Ibn 'Abbas (RA): Allah's Messenger (ﷺ) used to teach us at-Tashahhud: "All services expressed by words, increase in good, acts of worship and all good things are due to Allah ... " till the end.
Sunnah.com reference: Book 2, Hadith 206