Man Lā Yaḥḍuruh al-Faqīh
Hadith 781781 - وَ سَأَلَ حَبِيبُ بْنُ اَلْمُعَلَّى أَبَا عَبْدِ اَللَّهِ عَلَيْهِ اَلسَّلاَمُ فَقَالَ لَهُ: إِنِّي رَجُلٌ كَثِيرُ اَلسَّهْوِ فَمَا أَحْفَظُ صَلاَتِي إِلاَّ بِخَاتَمِي أُحَوِّلُهُ مِنْ مَكَانٍ إِلَى مَكَانٍ فَقَالَ «لاَ بَأْسَ بِهِ.
Hadith.781 - Habib ibn al-Mu'alla asked Imam Jafar ibn Muhammad Al-Sadiq (as), saying:
"I am a man who experiences frequent forgetfulness, so I can only maintain focus in my prayer by moving my ring from one finger to another."
Imam (as) said: "There is no harm in that."