A sick person may perform Tawaf while riding
حَدَّثَنَا عَبْدُ اللَّهِ بْنُ مَسْلَمَةَ، حَدَّثَنَا مَالِكٌ، عَنْ مُحَمَّدِ بْنِ عَبْدِ الرَّحْمَنِ بْنِ نَوْفَلٍ، عَنْ عُرْوَةَ، عَنْ زَيْنَبَ ابْنَةِ أُمِّ سَلَمَةَ، عَنْ أُمِّ سَلَمَةَ ـ رضى الله عنها ـ قَالَتْ شَكَوْتُ إِلَى رَسُولِ اللَّهِ صلى الله عليه وسلم أَنِّي أَشْتَكِي. فَقَالَ " طُوفِي مِنْ وَرَاءِ النَّاسِ وَأَنْتِ رَاكِبَةٌ ". فَطُفْتُ وَرَسُولُ اللَّهِ صلى الله عليه وسلم يُصَلِّي إِلَى جَنْبِ الْبَيْتِ، وَهْوَ يَقْرَأُ بِالطُّورِ وَكِتَابٍ مَسْطُورٍ.
Narrated Um Salama: I informed Allah's Messenger (ﷺ) that I was sick. He said, "Perform Tawaf (of the Ka`ba) while riding behind the people." So, I performed the Tawaf while Allah's Messenger (ﷺ) was offering the prayer beside the Ka`ba and was reciting Surat-at-Tur.