Thabit (may Allah have mercy on him) reports that people asked Sayyiduna Anas bin Malik (may Allah be pleased with him) about the ring of the Prophet (peace and blessings be upon him), and the rest of the hadith is the same, except that (in this one) he raised his left little finger.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 1757