Imām Bukhārī narrates: Abū Ma'mar narrated to us, he is 'Abdullāh ibn 'Amr, he said: 'Abdul-Wārith narrated to us, from al-Husain, he said: 'Abdullāh ibn Buraidah narrated to us, he said: 'Abdullāh al-Muzanī narrated to me that the Prophet ﷺ said:
Let not the bedouins overcome you regarding the name of your Maghrib prayer; the bedouins call Maghrib "'Ishā'".
Reference: Sahih Al Bukhari 563