Jāmi` al-Tirmidhi (Arabic: جامع الترمذي), popularly and mistakenly Sunan al-Tirmidhi (Arabic: سُـنَن الترمذي), is one of the Sunni Six major Hadith collections. It was collected by Abu 'Eesa Muhammad ibn 'Eesa al-Tirmidhi. Al-Kattani said: "The Jaami' of al-Tirmithi is also named The Sunan, contrary to those thinking them to be two separate books, and [it is also named] Al-Jaami' al-Kabeer.
Yahya ibn Musa has also heard the hadith from Abdur Razzaq who from Isra'il who from
Aamir ibn Shafiq who from Abu Wa'il who from Sayyidina Othman ibn Affan (RA) that
Prophet (SAW) used to run his fingers through his beard.