The Prophet (ﷺ) said, "Do not be influenced by bedouins regarding the name of your Maghrib prayer which is called `Isha' by them."
Sahih al-Bukhari Book 9, Hadith 40
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Sahih al-Bukhari Book 9, Hadith 39 Next Hadith → "One night Allah's Messenger (ﷺ) led us in the `Isha' prayer and that is the one called Al-`Atma by the people. After the completion of the prayer, he faced us and said, "Do you know the importance of this night? Nobody present on the surface of the earth tonight will be living after one hundred years from this night." (See Hadith No. 575).

Sahih al-Bukhari Book 9, Hadith 41