It is stated in the Srimad Bhagavatam that sometimes demigods tempt sannyasis by appearing as their former wives in dreams. “‘This man taking sannyasa is going to surpass us and go back home, back to Godhead.’ Thus thinking, the demigods create stumbling blocks on the path of the sannyasi by appearing before him in the shape of his former wife or other women and attractive objects. But the sannyasi should pay the demigods and their manifestations no heed.” (Srimad Bhagavatam 11.18.14)