It is narrated from Hazrat Abu Saeed (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: Whatever worry, hardship, grief, illness, or sorrow, even those thoughts "which trouble him" reach a Muslim, Allah expiates his sins through them.
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 11770
Hadith Gradingحکم دارالسلام:حديث صحيح لغيره، وهذا إسناد حسن ، م : 2573