Reference: Fataawa Noor ‘alad-Darb – Question No.6386, Page 212, Volume 12
Question: What is the ruling regarding using rosary (prayer) beads for tasbeeh?
Response: That which is best is to do tasbeeh using one’s fingers; this is based on the hadeeth of Yusayrah (radhi-yAllaahu ‘anhaa) that the Prophet ﷺ said:
So [based upon this hadeeth] it is not befitting to do tasbeeh using rosary (prayer) beads – neither for the remembrance after the prayer, and nor when engaging in any other remembrance; rather, the tasbeeh should be done with the fingers.