وعن ابن عباس رضي الله عنهما قال : ( ص ) ليست من عزائم السجود وقد رأيت رسول الله صلى الله عليه وآله وسلم يسجد فيها . رواه البخاري.
Narrated Ibn 'Abbas (RA): A prostration while reciting Surat Sad (Surah 38) is not one of the 'Azaa'im (those which are always required), but I have seen Allah's Messenger (ﷺ) prostrating while reciting it. [Reported by al-Bukhari].