‏النكاح : Hadeeth No:3422 'Amra reported that she beard 'A'isha (Allaah he pleased with her) discussing fosterage which (makes marriage) unlawful; and she ('A'isha) said: There was revealed in the Holy Qur'an ten clear sucklings, and then five clear (sucklings)....

‏الجهاد والسير‏ : Hadeeth No:4467 It has been narrated on the authority of Buraida (who heard the tradition from his father) that the Messenger of Allaah (sallAllaahu alayhi wa sallam) conducted nineteen military campaigns and he (actually) fought in eight of them....