Mukhtasar Bukhari

Narrated by Umm Haram (may Allah be pleased with her): She heard the Prophet Muhammad (peace be upon him) say: "The first people among my Ummah who will fight in the sea, Paradise will be obligatory for them." I asked, "O Messenger of Allah! Am I among them?" He (peace be upon him) said: "You are among them." Umm Haram (may Allah be pleased with her) says that then the Prophet Muhammad (peace be upon him) said: "The first people among my Ummah who will fight in the city of Caesar (Constantinople), they will be forgiven." I asked, "O Messenger of Allah! Am I among those people?" He (peace be upon him) said: "No (you are not among them)."