كتاب المقدمات
The Book of Miscellany
(71)
Chapter: Modesty and Courtesy towards the Believers
(71)
- باب التواضع وخفض الجناح للمؤمنين
Riyad as-Salihin 606
Tamim bin Usaid (May Allah be pleased with him) reported:
I came to Messenger of Allah (ﷺ) while he was delivering a Khutbah and said: "O Messenger of Allah, a stranger (meaning himself) has come to inquire about his Deen. He is quite ignorant about his Deen." Messenger of Allah (ﷺ) interrupted his Khutbah and turned to me. Then a chair was brought for him and he sat on it. He started instructing me what Allah had taught him. Then he resumed his Khutbah and completed it.

[Muslim].

وعن أبي رفاعة تميم بن أسيد رضي الله عنه قال‏:‏ انتهيت إلى رسول الله صلى الله عليه وسلم وهو يخطب، فقلت‏:‏ يا رسول الله رجل غريب جاء يسأل عن دينه لا يدرى ما دينه‏؟‏ فأقبل علي رسول الله صلى الله عليه وسلم، وترك خطبته حتى انتهى إلى فأتى بكرسي، فقعد عليه وجعل يعلمني مما علمه الله ثم أتى خطبته فأتم آخرها”‏.‏ ‏(‏‏(‏رواه مسلم‏)‏‏)‏‏.‏
Reference : Riyad as-Salihin 606
In-book reference : Introduction, Hadith 606