"Malik bin Al-Huwairith used to come to us and say: "Shall I not tell you about the prayer of the Messenger of Allah ﷺ?" He was praying at a time other than the time of prayer, and when he raised his head from the second prostration in the first rak'ah, he settled in a seated position, then he stood up, and he supported himself on the ground (while doing so)." (Using translation from Nasāʾī 1153)
عَنْ صَلَاةِ رَسُولِ اللهِ ﷺ؟ فَيُصَلِّي فِي غَيْرِ وَقْتِ صَلَاةٍ فَإِذَا رَفَعَ رَأْسَهُ مِنَ السَّجْدَةِ الثَّانِيَةِ فِي أَوَّلِ رَكْعَةٍ اسْتَوَى قَاعِدًا ثُمَّ قَامَ وَاعْتَمَدَ عَلَى الْأَرْضِ»