[Machine] The Messenger of Allah ﷺ used to pray while sitting after he reached old age, until the remaining verses of the Surah were thirty or forty, then he would stand and recite, then he would perform a bow.
كَانَ رَسُولُ اللهِ ﷺ يُصَلِّي جَالِسًا بَعْدَمَا دَخَلَ فِي السِّنِّ حَتَّى إِذَا بَقِيَ عَلَيْهِ مِنَ السُّورَةِ ثَلَاثُونَ أَوْ أَرْبَعُونَ آيَةً قَامَ فَقَرَأَ ثُمَّ رَكَعَ