Araj reported,

With this chain of transmission, it was reported that whenever the Messenger of Allah ﷺ would begin the prayer, he would say the takbir, then he would say, "I have turned my face..." and he said, "And I am the first of the Muslims."He said, "When he raised his head from the bowing, he would say, 'Allah hears whoever praises Him. Our Lord, to You belongs all praise.'"He said, "And He fashioned him and made his form excellent."He said, "When he gave the salam, he would say, 'O Allah, forgive me what I have done before...'" to the end of the hadith. He did not say, "between the tashahhud and the taslim."

Muslim 1813

Sahih

و حدثناه زهير بن حرب حدثنا عبد الرحمن بن مهدي ح و حدثنا إسحق بن إبراهيم أخبرنا أبو النضر قالا حدثنا عبد العزيز بن عبد الله بن أبي سلمة عن عمه الماجشون بن أبي سلمة

عن الأعرج

بهذا الإسناد وقال كان رسول الله ﷺ إذا استفتح الصلاة كبر ثم قال وجهت وجهي وقال وأنا أول المسلمين وقال وإذا رفع رأسه من الركوع قال سمع الله لمن حمده ربنا ولك الحمد وقال وصوره فأحسن صوره وقال وإذا سلم قال اللهم اغفر لي ما قدمت إلى آخر الحديث ولم يقل بين التشهد والتسليم

مسلم 1813صحيح
Contents
Reference
Commentary
Ayat
Collection
Sahih Muslim
Book
Travelers' prayer and its shortening
Chapter
Supplication in the night prayer and its standing
Numbering
Darussalam 1813
Muslim 1813