Narrated Ar-Rabi'bint Mu'auwidh:

We used to take part in holy battles with the Prophet by providing the people with water and serving them and bringing the killed and the wounded back to Medina.

حَدَّثَنَا مُسَدَّدٌ، حَدَّثَنَا بِشْرُ بْنُ الْمُفَضَّلِ، عَنْ خَالِدِ بْنِ ذَكْوَانَ، عَنِ الرُّبَيِّعِ بِنْتِ مُعَوِّذٍ، قَالَتْ كُنَّا نَغْزُو مَعَ النَّبِيِّ ﷺ فَنَسْقِي الْقَوْمَ وَنَخْدُمُهُمْ، وَنَرُدُّ الْجَرْحَى وَالْقَتْلَى إِلَى الْمَدِينَةِ.