[Machine] We used to read on Abu Abd al-Rahman al-Sulami while he was walking. Whenever we passed by the prostration area, he would say the takbir (Allahu Akbar) and we would say the takbir as well. He would prostrate and we would prostrate with a gesture, raising his head and saying "As-Salamu 'Alaykum" (Peace be upon you), and we would reply with "Wa 'Alaykum As-Salam" (And peace be upon you). Abu Abd al-Rahman claimed that Abdullah used to do this with them.  

كُنَّا نَقْرَأُ عَلَى أَبِي عَبْدِ الرَّحْمَنِ السُّلَمِيِّ وَهُوَ يَمْشِي فَإِذَا مَرَرْنَا بِالسَّجْدَةِ كَبَّرَ وَكَبَّرْنَا وَسَجَدَ وَسَجَدْنَا إِيمَاءً يَرْفَعُ رَأْسَهُ وَيَقُولُ السَّلَامُ عَلَيْكُمْ فَنَقُولُ وَعَلَيْكُمُ السَّلَامُ «وَزَعَمَ أَبُو عَبْدِ الرَّحْمَنِ» أَنَّ عَبْدَ اللهِ كَانَ يَفْعَلُ ذَلِكَ بِهِمْ