That the Prophet ﷺ used to point with his finger when he supplicated, but he did not move it. Ibn Jurayj said: "And 'Amr added: 'Amir bin 'Abdullah bin Az-Zubair told me that his father saw the Prophet ﷺ supplicating like that, putting his weight on his left arm, leaning on his left leg.'" (Using translation from Nasāʾī 1270)
«أَنَّ النَّبِيَّ ﷺ كَانَ يُشِيرُ بِإِصْبَعِهِ إِذَا دَعَا لَا يُحَرِّكُهَا» قَالَ ابْنُ جُرَيْجٍ وَزَادَ عَمْرُو بْنُ دِينَارٍ قَالَ أَخْبَرَنِي عَامِرُ بْنُ عَبْدِ اللهِ بْنِ الزُّبَيْرِ عَنْ أَبِيهِ أَنَّهُ رَأَى النَّبِيَّ ﷺ يَدْعُو كَذَلِكَ وَيَتَحَامَلُ بِيَدِهِ الْيُسْرَى عَلَى رِجْلِهِ الْيُسْرَى