٢ـ مُحَمَّدُ بْنُ يَحْيَى عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ عَنِ الْحُسَيْنِ بْنِ سَعِيدٍ عَنْ مُحَمَّدِ بْنِ سِنَانٍ عَنِ ابْنِ مُسْكَانَ عَنْ أَبِي بَصِيرٍ قَالَ سَأَلْتُ أَبَا عَبْدِ الله (عَلَيْهِ الْسَّلام) عَنْ رَجُلٍ شَكَّ فَلَمْ يَدْرِ سَجْدَةً سَجَدَ أَمْ سَجْدَتَيْنِ قَالَ يَسْجُدُ حَتَّى يَسْتَيْقِنَ أَنَّهُمَا سَجْدَتَانِ.
2. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from al-Husayn ibn Sa‘id from Muhammad ibn Sinan from ibn Muskan from abu Basir from who has said the following: “I once asked abu ’Abd Allah , about a man who doubts and does not know if he has performed one or two Sajdah (prostrations). He (the Imam) said, ‘He performs Sajdah (prostration) to ascertain that it is two Sajdah (prostrations).”’ 