Chapter on the Rulings on Forgetfulness (Ahkam al-Sahw)
Tahdhīb al-Aḥkām|Volume 2|Book 1|Chapter 16
عَنْهُ عَنْ مُحَمَّدِ بْنِ إِسْمَاعِيلَ عَنْ أَبِي إِسْمَاعِيلَ اَلسَّرَّاجِ عَنْ حَبِيبٍ اَلْخَثْعَمِيِّ قَالَ: شَكَوْتُ إِلَى أَبِي عَبْدِ اَللَّهِ عَلَيْهِ اَلسَّلاَمُ كَثْرَةَ اَلسَّهْوِ فِي اَلصَّلاَةِ فَقَالَ« أَحْصِ صَلاَتَكَ بِالْحَصَى» أَوْ قَالَ« اِحْفَظْهَا بِالْحَصَى»
From him, from Muhammad ibn Isma‘il from Abu Isma‘il al-Sarraj from Habib al-Khath‘ami, who said:
I complained to Abu Abdillah عليه السلام, peace be upon him, about frequent forgetfulness in prayer. Imam عليه السلام said: "Count your prayers with pebbles," or Imam عليه السلام said: "Keep track of them with pebbles."
- Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 2, p. 375
- Ṣaḥīḥ al-Tahdhīb