Chapter: Rukuâ (Kneeling) and Readings therein and When Standing up Straight Thereafter ÙÙد٠بÙÙÙ ÙÙØÙÙÙ٠عÙÙ٠أÙØÙÙ ÙÙد٠عÙÙ٠اÙÙØÙسÙÙÙÙ٠بÙÙ٠سÙعÙÙد٠عÙÙÙ ÙÙضÙاÙÙة٠بÙÙ٠أÙÙÙÙÙب٠عÙÙ٠أÙبÙ٠اÙÙÙ ÙغÙرÙاء٠عÙÙ٠أÙبÙ٠بÙصÙÙر٠عÙÙ٠أÙبÙ٠عÙبÙد٠اÙÙÙ (عÙÙÙÙÙÙ٠اÙÙسÙÙÙا٠ÙÙÙÙÙÙ (صÙÙ٠اÙÙÙ٠عÙÙÙÙÙÙÙ ÙÙØ¢ÙÙÙ) ٠٠صÙÙÙبÙÙÙ ÙÙ٠اÙصÙÙÙاÙØ©Ù ÙÙÙا٠صÙÙاÙØ©Ù ÙÙÙÙ.
4.Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from al-Husayn ibn Saâid from Fadalah ibn Ayyub from abu al- Mighraâ from abu Basir who has said the following: âAbu âAbd Allah (a.s.), has said that âAmir al-Muâminin has said, âOne who does not straighten his back during Salah (prayer), his Salah (prayer) is not valid.ââ صØÙØ - Allamah Baqir al-Majlisi (MirʾÄt al-Ê¿UqÅ«l fÄ« Sharḥ AkhbÄr Äl al-RasÅ«l (15/125))