Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) reports that the Prophet (peace and blessings be upon him) said: "Being killed in the path of Allah becomes an expiation for all sins (the narrator is unsure; perhaps the words are:) becomes an expiation for everything, except the trust (amanah). The trust pertains to prayer as well, the trust pertains to fasting as well, the trust pertains to speech as well, and the most severe (trust) concerns the things left in one's keeping as deposits."
Al-Tabarani recorded it, and its narrators are thiqat (trustworthy).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الجهاد / 9515
Hadith Gradingمحدثین:إسنادہ صحیح
Hadith Takhrij«اخرجه الطبراني فى المعجم الكبير (10537) ، أخرجه المعجم الكبير للطبراني برقم: 10527»