Nail Cutting Sunnah - An Overview
And he (might Allah have mercy on him) said in Sharh Saheeh Muslim (3/149): It can be mustahabb to begin with the fingers before the toes, and also to start with the forefinger of the best hand, then the center finger, then the ring finger, then the pinkie finger, then the thumbs, then to maneuver on the remaining hand and start with the pinkie fin