question #1 Sahih al-Bukhari 1521, Book 25, Hadith 9 : What are the spiritual benefits of performing Hajj with sincerity and avoiding sinful behavior?

The Prophet (p.b.u.h) said, “Whoever performs Hajj for Allah’s pleasure and does not have sexual
relations with his wife, and does not do evil or sins then he will return (after Hajj free from all sins) as
if he were born anew.”