The Prophet ﷺ said, "The martyr is granted six privileges. With the first drop of his blood, every sin is forgiven. He sees his place in Paradise. He is married to the maidens of Paradise. He is secured from the Greatest Terror and from the punishment of the grave. And he is adorned with the garment of faith."
قال النبي ﷺ: يعطى الشهيد ست خصال: عند أول قطرة من دمه يكفر عنه كل خطيئة، ويرى مقعده من الجنة، ويزوج من الحور العين، ويؤمن من الفزع الأكبر، ومن عذاب القبر، ويحلى حلة الإيمان.
Ahmad narrated it (17883) from Zayd bin Yahya Dimashqi, who said, "Ibn Thawban narrated to us from his father, from Makhul, from Kathir bin Mura, from Qays Juzami," and he mentioned it. Its chain of transmission is hasan, and it is presented in the Book of Funerals.