Abu Rifa reported,

I came to the Prophet ﷺ while he was delivering a sermon. I said, "Messenger of Allah, a stranger has come to ask about his religion, for he does not know what his religion is."The Messenger of Allah ﷺ turned toward me and left his sermon until he reached me. A chair was brought, its legs made of iron, and the Messenger of Allah ﷺ sat upon it and began teaching me from what Allah had taught him. Then he returned to his sermon and completed its remainder.

Azami 14293

Sahih

عن أبي رفاعة قال

انتهيت إلى النبي ﷺ وهو يخطب، قال: فقلت: يا رسول الله! رجل غريب جاء يسأل عن دينه، لا يدري ما دينه! قال: فأقبل علي رسول الله ﷺ وترك الخطبة حتى انتهى إلي، فأتي بكرسي حيبت قوائمه حديدا، قال: فقعد عليه رسول الله ﷺ، وجعل يعلمني مما علمه الله، ثم أتى خطبته فأتم آخرها.

الأعظمي 14293صحيح
Contents
Reference
Commentary
Ayat
Collection
Jami al-Kamil
Book
Superior moral conduct
Chapter
Etiquette of sitting and gatherings
Section
One who leaves his seat then returns is most entitled to it
Numbering
Jami al-Kamil 14293 (2nd edition)
Azami 14293