A man reported,
The Messenger of Allah ﷺ came to us while we were in a tent inside the mosque of Medina and said in it, "It has been revealed to me that I should fight the people until they say, 'There is no god but Allah,'" or something similar.
Nasai 3985
Sahihقال عبيد الله حدثنا إسرائيل عن سماك عن النعمان بن سالم
عن رجل حدثه قال
دخل علينا رسول الله ﷺ ونحن في قبة في مسجد المدينة وقال فيه إنه أوحي إلي أن أقاتل الناس حتى يقولوا لا إله إلا الله نحوه
النسائي 3985صحيح
Contents
Reference
Commentary
Ayat
Collection
Sunan Nasai Sughra
Book
Prohibition of bloodshed
Chapter
Prohibition of bloodshed
Numbering
Darussalam 3985
Details
Collection
Sunan Nasai Sughra
Book
Prohibition of bloodshed
Chapter
Prohibition of bloodshed
Numbering
Darussalam 3985
Ayat
No annotations are available.
Reference
Nasai3986
Commentary
Darussalam
Its chain of transmission is sahih. Ibn Majah narrated it in the Book of Fitan, chapter on refraining from harming one who says "There is no god but Allah," hadith no. 3929, from the hadith of Numan bin Salim, through him. It is also in Kubra, hadith no. 3442, and Busiri graded it sahih. The man is Aws 
.