Q: What is the sign of an accepted Hajj (Hajj Mabroor)?
A: The fuqahaa have stated that the sign of an accepted Hajj is that after one returns from Hajj he reforms his life, he practises the sunnats more punctually and diligently, his desire for increasing good deeds intensifies and he develops a natural aversion and dislike for sin. If these signs are not evident in the life of a Haaji who has returned (instead he persists upon his previous ways of sinning), then this is a sign that the Hajj that he had carried out was not an accepted Hajj (Hajj Mabroor). (Malfoozaat Faqeehil Ummah)