Jami` at-Tirmidhi 811
جامع الترمذي#811SahihAbu Hurairah narrated that :The Messenger of Allah said: "Whoever performs Hajj for Allah, and he does not have sexual relations nor commit any sin, then his previous sins will be forgiven
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Ahmad Muhammad ShakirSahih
Al-AlbaniSahih
Bashar Awad MaaroufHasan Sahih
Zubair Ali ZaiSahih - Agreed Upon
In-book reference: 9:3