Al-Kāfi - The Book of Prayer

Chapter: Rules about the Very Old or One with an Illness َّدُ بْنُ يَحْيَى عَنْ أَحْ٠َّدٍ عَنِ الْحُسَيْنِ بْنِ سَعِيدٍ عَنِ الْقَاسِ٠َّدٍ عَنْ عَلِيِّ بْنِ أَبِي حَ٠ْزَةَ عَنْ أَبِي بَصِيرٍ عَنْ أَبِي جَعْفَرٍ (عَلَيْهِ الْسَّلا٠) قَالَ قُلْتُ لَهُ إِنَّا نَتَحَدَّثُ نَقُولُ ٠َنْ صَلَّى وَهُوَ جَالِسٌ ٠ِنْ غَيْرِ عِلَّةٍ كَانَتْ صَلاَتُهُ رَكْعَتَيْنِ بِرَكْعَةٍ وَسَجْدَتَيْنِ بِسَجْدَةٍ فَقَالَ لَيْسَ هُوَ هَكَذَا هِيَ تَا٠2.

Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from al-Husayn ibn Sa‘id from al-Qasim ibn Muhammad from Ali ibn abu Hamzah from abu Basir who has said the following: “I once said to abu Ja’far (a.s.), that we speak and say that whoever performs Salah (prayer) in a sitting position without good reason, his two Rak’at are counted as one Rak’at and his two Sajdah (prostration) are counted as one Sajdah (prostration). He (the Imam) said, ‘It is not that way.

It is complete for you.’” ضعيف - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (5/332))