Sunan Ibn Majah, 245

It was narrated that Abu Umamah said:"The Prophet walked on a very hot day towards Baqi' Al-Gharqad (graveyard of Al-Madinah), and the people were walking behind him. When he heard the sound of their shoes, it affected his soul so he sat down until he made them go ahead of him, lest that make him feel too proud

Rapporté par Abu Umamah : Le Prophète ﷺ a marché un jour très chaud vers le cimetière de Baqi' Al-Gharqad (à Médine), et les gens marchaient derrière lui. Quand il a entendu le bruit de leurs chaussures, cela l’a touché, alors il s’est assis jusqu’à ce qu’ils passent devant lui, de peur que cela ne lui donne un sentiment d’orgueil