Jami` at-Tirmidhi 866
جامع الترمذي#866Da'ifIbn Abbas narrated:"Whoever performed Tawaf around the House fifty time, he will be as free of his sins as the day his mother bore him
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Ahmad Muhammad ShakirDaif
Al-AlbaniDaif
Zubair Ali ZaiDaif
In-book reference: 9:59