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Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
nasai-kubra:1188 – Muḥammad b. ʿAlī b. Maymūn al-Raqqī > Muḥammad / Ibn Yūsuf al-Firyābī > Sufyān > ʿĀṣim b. Kulayb from his father > Wāʾil b. Ḥujr

He saw the Prophet ﷺ sitting during the prayer. He lay his left foot on the ground and placed his forearms on his thighs, and pointed with his forefinger, supplicating with it. (Using translation from Nasāʾī 1264)  

الكبرى للنسائي:١١٨٨ – أَخْبَرَنِي مُحَمَّدُ بْنُ عَلِيِّ بْنِ مَيْمُونٍ الرَّقِّيُّ قَالَ حَدَّثَنَا مُحَمَّدٌ وَهُوَ ابْنُ يُوسُفَ الْفِرْيَابِيُّ حَدَّثَنَا سُفْيَانُ عَنْ عَاصِمِ بْنِ كُلَيْبٍ عَنْ أَبِيهِ عَنْ وَائِلِ بْنِ حُجْرٍ

أَنَّهُ رَأَى النَّبِيَّ ﷺ «جَلَسَ فِي الصَّلَاةِ فَفَرَشَ رِجْلَهُ الْيُسْرَى وَوَضَعَ ذِرَاعَيْهِ عَلَى فَخِذَيْهِ وَأَشَارَ بِالسَّبَّابَةِ يَدْعُو»  

See similar narrations below:

Collected by Nasāʾī
nasai:1264 – Muḥammad b. ʿAlī b. Maymūn al-Raqqī > Muḥammad / Ibn Yūsuf al-Firyābī > Sufyān > ʿĀṣim b. Kulayb from his father > Wāʾil b. Ḥujr

He saw the Prophet ﷺ sitting during the prayer. He lay his left foot on the ground and placed his forearms on his thighs, and pointed with his forefinger, supplicating with it.  

النسائي:١٢٦٤ – أَخْبَرَنَا مُحَمَّدُ بْنُ عَلِيِّ بْنِ مَيْمُونٍ الرَّقِّيُّ قَالَ حَدَّثَنَا مُحَمَّدٌ وَهُوَ ابْنُ يُوسُفَ الْفِرْيَابِيُّ قَالَ حَدَّثَنَا سُفْيَانُ عَنْ عَاصِمِ بْنِ كُلَيْبٍ عَنْ أَبِيهِ عَنْ وَائِلِ بْنِ حُجْرٍ

أَنَّهُ رَأَى النَّبِيَّ ﷺ جَلَسَ فِي الصَّلاَةِ فَافْتَرَشَ رِجْلَهُ الْيُسْرَى وَوَضَعَ ذِرَاعَيْهِ عَلَى فَخِذَيْهِ وَأَشَارَ بِالسَّبَّابَةِ يَدْعُو بِهَا