TABARANI 13893:
from ʿĀmir b. ʿAbdullāh b. al-Zubayr from his father —
[Machine] "The Prophet ﷺ used to sit in prayer and place his left foot between his thigh and calf. He would place his left hand on his left thigh and his right hand on his right thigh."
الطبراني ١٣٨٩٣:
عن عامر بن عبد الله بن الزبير عن أبيه —
«كَانَ النَّبِيُّ ﷺ إِذَا جَلَسَ فِي الصَّلَاةِ وَضَعَ رِجْلَهُ الْيُسْرَى بَيْنَ فَخِذِهِ وَسَاقِهِ وَوَضَعَ يَدَهُ الْيُسْرَى عَلَى فَخِذِهِ الْيُسْرَى وَوَضَعَ يَدَهُ الْيُمْنَى عَلَى فَخِذِهِ الْيُمْنَى»