It is narrated from Sayyiduna Muhammad bin Abdullah bin Jahsh (may Allah be pleased with him) that a man came to the Prophet (peace and blessings be upon him) and said: O Messenger of Allah! If I am killed in the path of Allah, (what will happen)? He (peace and blessings be upon him) said: "Paradise." Then, when he turned to leave, he (peace and blessings be upon him) said: "Except for debt; Jibril (peace be upon him) whispered this to me just now."
Hadith Referenceالمعجم الكبير للطبراني / باب الميم / 16606