Lady Aisha (may Allah be pleased with her) narrated that she complained to the Messenger of Allah (peace and blessings be upon him) about the occurrence of evil thoughts. She said: O Messenger of Allah! Such thoughts arise in our hearts that it is more beloved to any one of us to fall from the sky than to express such a thought. So the Prophet (peace and blessings be upon him) said: "This is pure faith."
Hadith Referenceمسند اسحاق بن راهويه / كتاب الايمان / 68
Hadith Takhrij«مسلم ، كتاب الايمان ، باب بيان الوسوسة فى الايمان الخ ، رقم : 132 . سنن ابوداود ، كتاب الادب ، باب فى رد الوسوسسة ، رقم : 5111 ، 5112»