عَنْ سَعِيدِ بْنِ عَبْدِ الرَّحْمَنِ بْنِ أَبْزَى عَنْ أَبِيهِ رَضِيَ اللَّهُ عَنْهُ قَالَ: كَانَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ إِذَا جَلَسَ فِي الصَّلَاةِ فَدَعَا وَضَعَ يَدَهُ الْيُمْنَى عَلَى فَخِذِهِ ثُمَّ كَانَ يُشِيرُ بِإِصْبَعِهِ
It is narrated from Sayyiduna Abdur Rahman bin Abzi, may Allah be pleased with him, who says that when the Messenger of Allah, peace and blessings be upon him, would sit and supplicate in prayer, he would place his right hand on his thigh and then gesture with his finger.