It is narrated from Abu Qilabah (may Allah have mercy on him) that he stated: Malik bin Huwairith (may Allah be pleased with him) came to us. He prayed in our mosque and said: "By Allah! I would not have prayed, nor did I intend to pray, but I wanted to show you how I saw the Messenger of Allah (ﷺ) praying." He stated that he (ﷺ) would stand from the first rak'ah, and when he intended to rise, Abu Qilabah says, I asked: How? (Did he bend?) Malik bin Huwairith replied: "Like the way I performed this prayer."
Hadith Referenceمسند الإمام الشافعي / كتاب الصلاة / 249
Hadith Takhrijأخرجہ البخاری: الأذان، باب من صلی بالناس وهو لا یرید إلا أن یعلمهم صلاۃ النبی ﷺ وسنته: 677، 802، 818۔