١ـ مُحَمَّدُ بْنُ يَحْيَى عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ عَنْ عَلِيِّ بْنِ الْحَكَمِ عَنْ عُثْمَانَ بْنِ عَبْدِ الْمَلِكِ عَنْ أَبِي بَكْرٍ الْحَضْرَمِيِّ قَالَ قَالَ أَبُو جَعْفَرٍ (عَلَيْهِ الْسَّلام) تَدْرِي أَيُّ شَيْ‏ءٍ حَدُّ الرُّكُوعِ وَالسُّجُودِ قُلْتُ لاَ قَالَ تُسَبِّحُ فِي الرُّكُوعِ ثَلاَثَ مَرَّاتٍ سُبْحَانَ رَبِّيَ الْعَظِيمِ وَبِحَمْدِهِ وَفِي السُّجُودِ سُبْحَانَ رَبِّيَ الأعْلَى وَبِحَمْدِهِ ثَلاَثَ مَرَّاتٍ فَمَنْ نَقَصَ وَاحِدَةً نَقَصَ ثُلُثَ صَلاَتِهِ وَمَنْ نَقَصَ ثِنْتَيْنِ نَقَصَ ثُلُثَيْ صَلاَتِهِ وَمَنْ لَمْ يُسَبِّحْ فَلاَ صَلاَةَ لَهُ.
1. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from Ali ibn al-Hakam from ‘Uthman ibn ‘Abd al-Malik from abu Bakr al-Hadramiy who has said the following: “Abu Ja’far , once asked me, ’Do you know what the limits of Ruku’ (bowing down on one’s knees) and Sujud (prostration) are?’ I replied, ’No, I do not know them.’ He (the Imam) said, ‘Say Tasbih (my Lord, (Allah) most Great, is free of all defects and I praise Him) in Ruku’ three times. In Sujud position say, ’My Lord, (Allah) most High, is free of all defects and I praise Him. One who reduces one of these Tasbih has reduced one-third of his Salah (prayer). One who has reduced two of them has reduced two-thirds of his Salah (prayer) and one who does not say Tasbih has lost his Salah (prayer).”’ 