Sahih Muslim
Sahih Muslim 536
حَدَّثَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ، أَخْبَرَنَا مُحَمَّدُ بْنُ بَكْرٍ، ح قَالَ وَحَدَّثَنَا حَسَنٌ الْحُلْوَانِيُّ، حَدَّثَنَا عَبْدُ الرَّزَّاقِ، - وَتَقَارَبَا فِي اللَّفْظِ - قَالاَ جَمِيعًا أَخْبَرَنَا ابْنُ جُرَيْجٍ أَخْبَرَنِي أَبُو الزُّبَيْرِ أَنَّهُ سَمِعَ طَاوُسًا يَقُولُ قُلْنَا لاِبْنِ عَبَّاسٍ فِي الإِقْعَاءِ عَلَى الْقَدَمَيْنِ فَقَالَ هِيَ السُّنَّةُ . فَقُلْنَا لَهُ إِنَّا لَنَرَاهُ جَفَاءً بِالرَّجُلِ . فَقَالَ ابْنُ عَبَّاسٍ بَلْ هِيَ سُنَّةُ نَبِيِّكَ صلى الله عليه وسلم .
Ishaq ibn Ibrahim reported to us: Muhammad ibn Bakr informed us. (A transmission) H. Hasan al-Hulwani reported to us: Abd al-Razzaq reported to us—and their wording was close. They both said: Ibn Jurayj informed us: Abu al-Zubayr informed me that he heard Tawus say: We asked Ibn Abbas about sitting on one's heels. He said, 'That is the Sunnah.' We said to him, 'We find it hard on the foot.' Ibn Abbas said, 'Rather, it is the Sunnah of your Prophet (peace and blessings be upon him).'