The Book of Prayer
Bulugh al-Maram #376
كتاب الصلاة
وَعَنْ اِبْنِ عُمَرَ -رَضِيَ اَللَّهُ عَنْهُمَا- «أَنَّ رَسُولَ اَللَّهِ - صلى الله عليه وسلم -كَانَ إِذَا قَعَدَ لِلتَّشَهُّدِ وَضَعَ يَدَهُ اَلْيُسْرَى عَلَى رُكْبَتِهِ اَلْيُسْرَى, وَالْيُمْنَى عَلَى اَلْيُمْنَى, وَعَقَدَ ثَلَاثَةً وَخَمْسِينَ, وَأَشَارَ بِإِصْبَعِهِ اَلسَّبَّابَةِ» رَوَاهُ مُسْلِمٌ
Narrated Ibn 'Umar (RA):
When Allah's Messenger (ﷺ) sat for at-Tashahhud, he placed his left hand on his left knee, and his right hand on his right knee, folded its fingers and pointed with his right index finger.
وَعَنْ اِبْنِ عُمَرَ -رَضِيَ اَللَّهُ عَنْهُمَا- "أَنَّ رَسُولَ اَللَّهِ - صلى الله عليه وسلم -كَانَ إِذَا قَعَدَ لِلتَّشَهُّدِ وَضَعَ يَدَهُ اَلْيُسْرَى عَلَى رُكْبَتِهِ اَلْيُسْرَى , وَالْيُمْنَى عَلَى اَلْيُمْنَى , وَعَقَدَ ثَلَاثَةً وَخَمْسِينَ , وَأَشَارَ بِإِصْبَعِهِ اَلسَّبَّابَةِ" رَوَاهُ مُسْلِمٌ
When Allah's Messenger (ﷺ) sat for at-Tashahhud, he placed his left hand on his left knee, and his right hand on his right knee, folded its fingers and pointed with his right index finger.
— Bulugh al-Maram, Hadith 376