Hadithcore
Sunan Ibn Majah, 912
sahih· Darussalam

It was narrated that Wa’il bin Hujr said:

“I saw the Prophet (ﷺ) making a circle with his thumb and middle finger, and raising the one next to it (the index finger), supplicating with it during the Tashah-hud.”

حَدَّثَنَا عَلِيُّ بْنُ مُحَمَّدٍ، حَدَّثَنَا عَبْدُ اللَّهِ بْنُ إِدْرِيسَ، عَنْ عَاصِمِ بْنِ كُلَيْبٍ، عَنْ أَبِيهِ، عَنْ وَائِلِ بْنِ حُجْرٍ، قَالَ رَأَيْتُ النَّبِيَّ ـ صلى الله عليه وسلم ـ قَدْ حَلَّقَ الإِبْهَامَ وَالْوُسْطَى وَرَفَعَ الَّتِي تَلِيهِمَا يَدْعُو بِهَا فِي التَّشَهُّدِ ‏.‏

References2 variants
In-Book Reference
Book 5, Hadith 110
English Reference
Vol. 1, Book 5, Hadith 912