It was narrated from Sahl ibn Haneef which the Prophet (peace and blessings of Allaah be on him) explained: “Whoever asks Allaah sincerely for martyrdom, Allaah will result in him to get to the status of your martyrs regardless of whether he dies in his bed.” Narrated by al-Bukhaari, https://jannahfirdaus50504.blogitright.com/30493747/jannah-firdaus-no-further-a-mystery