The Book of Forgetfulness (In Prayer)
13/99. Chapter:
The Imam sitting in the place where he prayed after the taslim
Sunan an-Nasai
أَخْبَرَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، قَالَ حَدَّثَنَا أَبُو الأَحْوَصِ، عَنْ سِمَاكٍ، عَنْ جَابِرِ بْنِ سَمُرَةَ، قَالَ كَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم إِذَا صَلَّى الْفَجْرَ قَعَدَ فِي مُصَلاَّهُ حَتَّى تَطْلُعَ الشَّمْسُ .
It was narrated that Jabir bin Samurah said: "When the Messenger of Allah (ﷺ) prayed fajr, he would sit in the place where he had prayed until the sun rose."
Reference : Sunan an-Nasa'i 1357In-book reference : Book 13, Hadith 179English translation : Vol. 2, Book 13, Hadith 1358