Dr. Mustafa Khattab, the Clear Quran - Surah At-Tawbah, ayah 122

Translation of Surah At-Tawbah, ayah 122 (9:122)

۞ وَمَا كَانَ ٱلۡمُؤۡمِنُونَ لِيَنفِرُواْ كَآفَّةٗۚ فَلَوۡلَا نَفَرَ مِن كُلِّ فِرۡقَةٖ مِّنۡهُمۡ طَآئِفَةٞ لِّيَتَفَقَّهُواْ فِي ٱلدِّينِ وَلِيُنذِرُواْ قَوۡمَهُمۡ إِذَا رَجَعُوٓاْ إِلَيۡهِمۡ لَعَلَّهُمۡ يَحۡذَرُونَ ١٢٢

˹However,˺ it is not necessary for the believers to march forth all at once. Only a party from each group should march forth, leaving the rest to gain religious knowledge then enlighten their people when they return to them, so that they ˹too˺ may beware ˹of evil˺.