The Messenger of Allah (ﷺ) bought a camel from me. When he came back to Medina, he ordered me to come to the mosque and observed two rak'ahs of prayer.
Sahih Muslim Book 6, Hadith 87
← Previous Hadith The Apostle of Allah (ﷺ) owed me a debt; he paid me back and made an addition (of this). I entered the mosque and he (the Holy Prophet) said to me: Observe two rak'ahs of prayer.

Sahih Muslim Book 6, Hadith 86 Next Hadith → I went with the Messenger of Allah (ﷺ) on an expedition and my camel delayed me and I was exhausted. The Messenger of Allah (ﷺ) thus came earlier than I, whereas I came on the next day and went to the mosque and found him (the Holy Prophet) at the gate of the mosque. He said: It is now that you have come. I said. Yes. He said: Leave your camel and enter (the mosque) and observe two rak'ahs. He (the narrator) said: So I entered and observed (two rak'ahs) of prayer and then went back.

Sahih Muslim Book 6, Hadith 88