I saw as-Salt ibn Abdullah ibn Nawfal ibn AbdulMuttalib wearing the signet-ring on his right small finger. I asked: What is this? He replied: I saw Ibn Abbas wearing his ring in this manner. He put its stone towards the upper part of his palm. Ibn Abbas also mentioned that the Messenger of Allah ﷺ used to wear his signet-ring in his manner.
أَنَّ رَسُولَ اللَّهِ ﷺ كَانَ يَلْبَسُ خَاتَمَهُ كَذَلِكَ