قُلْتُ لِأَبِي جَعْفَرٍ ع أَ تُصَلِّي النَّوَافِلَ وَ أَنْتَ قَاعِدٌ فَقَالَ مَا أُصَلِّيهَا إِلَّا وَ أَنَا قَاعِدٌ مُنْذُ حَمَلْتُ هَذَا اللَّحْمَ وَ بَلَغْتُ هَذَا السِّنَّ.
“I once asked abu Ja’far (a.s.), ’Do you perform optional Salah (prayer) in a sitting position? He (the Imam) replied, ‘I perform them in a sitting position only from the time I have gained this much weight and reached this age.’”