Sayyiduna al-Abbas (may Allah be pleased with him) narrates that the Prophet (peace and blessings be upon him) said: "When the skin of a servant shivers out of fear of Allah Almighty, his sins fall away from him just as leaves fall from a withered tree."
Al-Bazzar recorded it; its chain contains a woman, Umm Kulthum bint al-Abbas, whom I do not know. The remaining narrators of this report are thiqat (trustworthy).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الزهد / 18217