Abdullah bin Masud reported,

The Messenger of Allah ﷺ said, "Islam began as something strange, and it will return to being strange as it began, so blessed are the strangers."Someone asked, "Who are they, Messenger of Allah?"He replied, "Those who set things right when the people have become corrupt."

Azami 183

Sahih

عن عبد الله بن مسعود: قال

قال رسول الله ﷺ: إن الإسلام بدأ غريبا وسيعود غريبا كما بدأ، فطوبى للغرباء قيل: من هم يا رسول الله؟ قال: الذين يصلحون إذا فسد الناس.

الأعظمي 183صحيح
Contents
Reference
Commentary
Ayat
Collection
Jami al-Kamil
Book
Faith
Chapter
Qualities of faith
Section
Islam began as something strange and will return as something strange
Numbering
Jami al-Kamil 183 (2nd edition)
Azami 183