Sahih Muslim Book - 5, Hadith - 1307

حَدَّثَنَا مُحَمَّدُ بْنُ مَعْمَرِ بْنِ رِبْعِىٍّ الْقَيْسِىُّ حَدَّثَنَا أَبُو هِشَامٍ الْمَخْزُومِىُّ عَنْ عَبْدِ الْوَاحِدِ - وَهُوَ ابْنُ زِيَادٍ - حَدَّثَنَا عُثْمَانُ بْنُ حَكِيمٍ حَدَّثَنِى عَامِرُ بْنُ عَبْدِ اللَّهِ بْنِ الزُّبَيْرِ عَنْ أَبِيهِ قَالَ كَانَ رَسُولُ اللَّهِ -صلى الله عليه وسلم- إِذَا قَعَدَ فِى الصَّلاَةِ جَعَلَ قَدَمَهُ الْيُسْرَى بَيْنَ فَخِذِهِ وَسَاقِهِ وَفَرَشَ قَدَمَهُ الْيُمْنَى وَوَضَعَ يَدَهُ الْيُسْرَى عَلَى رُكْبَتِهِ الْيُسْرَى وَوَضَعَ يَدَهُ الْيُمْنَى عَلَى فَخِذِهِ الْيُمْنَى وَأَشَارَ بِإِصْبَعِهِ.

'Amir bin 'Abdullah bin Az-Zubair narrated that his father said: "When the Messenger of Allah (s.a.w) sat during the prayer, he would put his left foot between his thigh and his shin, and rest his right foot (along the ground). He placed his left hand on his left knee, and he placed his right hand on his right thigh, and pointed with his finger.''