وَعَنِ ابْنِ عُمَرَ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «لَا يَغْلِبَنَّكُمُ الْأَعْرَابُ على اسْم صَلَاتكُمْ الْمغرب» . قَالَ: «وَتقول الْأَعْرَاب هِيَ الْعشَاء» وَقَالَ: " لَا يَغْلِبَنَّكُمُ الْأَعْرَابُ عَلَى اسْمِ صَلَاتِكُمُ الْعِشَاءِ فَإِنَّهَا فِي كِتَابِ اللَّهِ الْعِشَاءُ فَإِنَّهَا تعتم بحلاب الْإِبِل. رَوَاهُ مُسلم

Ibn ‘Umar reported God’s Messenger as saying, "Do not let the Bedouin take away from you the name of your prayer al-maghrib (sunset) which the Bedouin call al-'isha (evening); and do not let the Bedouin take away from you the name of your prayer al-‘isha, for it is mentioned as al-‘isha in God’s Book,1 and for they use the verb from the root ‘atama of milking camels at nightfall.” 1. (Al-Qur’an, 24:58.)