Not graded
Riyad as-Salihin 1312
Narrator:Abdullah ibn Amr
وعن عبد الله بن عمرو بن العاص رضي الله عنهما أن رسول الله صلى الله عليه وسلم قال:
"يغفر الله للشهيد كل شيء إلا الدين"
'Abdullah bin 'Amr bin Al-'As (May Allah be pleased with them) reported:
The Messenger of Allah (ﷺ) said, "Allah forgives every sin of a martyr, except his debt."
[Muslim].
Another narration in Muslim is: The Messenger of Allah (ﷺ) said, "Being martyred in the Cause of Allah expiates for everything, except debt."
Cited in Riyad as-Salihin (No. 1312).