‏الصلاة : Hadeeth No:809 Abu Huraira reported: The Messenger of Allaah (sallAllaahu alayhi wa sallam) said: When the Imam says:" Allaah listens to him who praises Him." you should say:" O Allaah, our Lord for Thee is the praise." for if what anyone says synchronises with what the angels say, his past sins will be forgiven....

‏الجهاد والسير‏ : Hadeeth No:4462 It has been narrated on the authority of Umm 'Atiyya, the Ansarite, who said: I took part with the Messenger of Allaah (sallAllaahu alayhi wa sallam) in seven battles. I would stay behind in the camp of men, cook their food, treat the wounded and nurse the aick....