Sunan Ibn Majah, 1225

Rapporté par Umm Salamah : Par Celui qui a repris son âme (c’est-à-dire celle du Prophète (ﷺ)), il n’est pas mort avant d’avoir accompli la plupart de ses prières assis. Et l’action qu’il préférait le plus était celle que la personne fait régulièrement, même si elle est petite

It was narrated that Umm Salamah said:‘By the One Who took his soul (i.e., the soul of the Prophet (ﷺ)), he did not die until he offered most of his prayers sitting down. And the dearest of the actions to him was the righteous action that the person does regularly, even if it were a little.”