Our Prophet has informed us our Lord's Message that whoever of us is martyred, will go to Paradise.
Sahih al-Bukhari Book 97, Hadith 155
← Previous Hadith The Prophet (ﷺ) said, "Not to wish to be the like of except the like of two (persons): a man whom Allah has given the knowledge of the Qur'an and he recites it during the hours of the night and the hours of the day; and a man whom Allah has given wealth and he spends it (in Allah's Cause) during the hours of the night and during the hours of the day."

Sahih al-Bukhari Book 97, Hadith 154 Next Hadith → Whoever tells you that the Prophet (ﷺ) concealed something of the Divine Inspiration, do not believe him, for Allah said: 'O Apostle Muhammad! Proclaim (the Message) which has been sent down to you from your Lord, and if you do it not, then you have not conveyed His Message.' (5.67)

Sahih al-Bukhari Book 97, Hadith 156