الصَّحِيحُ يُصَلِّي قَائِماً وَ قُعُوداً الْمَرِيضُ يُصَلِّي جَالِساً وَ عَلى جُنُوبِهِمْ الَّذِي يَكُونُ أَضْعَفَ مِنَ الْمَرِيضِ الَّذِي يُصَلِّي جَالِساً.
“About the words of Allah, most Majestic, most Glorious, ‘. . . those who speak of Allah, standing, sitting and while lying on their sides. . .’ (32:15) abu Ja‘far (a.s.), has said, ‘A healthy person performs Salah (prayer) standing. One suffering from an illness performs Salah (prayer) sitting, and ‘on their sides’ is