Abdullah ibn al-Zubayr reported: When the Messenger of Allah, peace and blessings be upon him, would sit in prayer, he would place his left foot between his thigh and shin, stretch his right foot, place his left hand on his left know, place his right hand on his right thigh, and point with his finger.
In another narration, Abdullah said: The gaze of the Prophet would not go beyond his index finger.
Source: Ṣaḥīḥ Muslim 579
Grade: Sahih (authentic) according to Muslim
Al-Nawawi said, “The Sunnah is for one’s gaze to not go beyond his index finger.”
Source: Sharḥ al-Nawawī ‘alá Ṣaḥīḥ Muslim 5/71
عَنْ عَبْدِ اللَّهِ بْنِ الزُّبَيْرِ قَالَ كَانَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ إِذَا قَعَدَ فِي الصَّلَاةِ جَعَلَ قَدَمَهُ الْيُسْرَى بَيْنَ فَخِذِهِ وَسَاقِهِ وَفَرَشَ قَدَمَهُ الْيُمْنَى وَوَضَعَ يَدَهُ الْيُسْرَى عَلَى رُكْبَتِهِ الْيُسْرَى وَوَضَعَ يَدَهُ الْيُمْنَى عَلَى فَخِذِهِ الْيُمْنَى وَأَشَارَ بِإِصْبَعِهِ
وفي رواية أخرى قال لاَ يُجَاوِزُ بَصَرُهُ إِشَارَتَهُ
579 صحيح مسلم كتاب المساجد ومواضع الصلاة باب صفة الجلوس في الصلاة وكيفية وضع اليدين على الفخذين
قال النووي وَالسُّنَّةُ أَنْ لَا يُجَاوِزَبَصَرُهُ إِشَارَتَهُ
5/71 شرح النووي على مسلم