We travelled with the Messenger of Allah (ﷺ) as he had been observing fast. When the sun sank he said: So and so, get down and prepare barley meal for us. The rest of the hadith is the same.
Sahih Muslim Book 13, Hadith 67
← Previous Hadith We were with the Messenger of Allah (ﷺ) on a journey. When the sun sank he said to a person: Get down and prepare barley meal for us. Upon this he said: Messenger of Allah, let there be dusk. (He the Holy Prophet) said: Get down and prepare barley meal for us. He (the person) said: There is still (the light of) day upon us. (But) he got down (in obedience to the command of the Holy Prophet) and prepared a barley meal for him and he (the Holy Prophet) drank that (liquid meal) and then said: When you see the night approaching from that side (west) (and he pointed towards the east with his hand), then the observer of the fast should break it.

Sahih Muslim Book 13, Hadith 66 Next Hadith → In this hadith transmitted by one of the narrators (neither these words are found): During the month of Ramadan." nor his statement:" And the night prevails from that side (the eastern side)." (These words are found in the narration of) Hushaim only.

Sahih Muslim Book 13, Hadith 68