[Machine] The Messenger of Allah ﷺ sent the army of Dhat al-Salsal and appointed Abu Ubaydah over the Muhajireen (emigrants) and appointed Amr ibn al-'As over the Arabs. He said to them, "Cooperate with each other." They said, "We were commanded to follow Bakr." So Amr set out and became jealous over Qudaa'ah because Bakr was his cousin. The Mu'gheerah ibn Shu'bah went to Abu Ubaydah and said, "Indeed, the Messenger of Allah ﷺ appointed you over us, and the son of so-and-so has taken command of the people and you have no authority with him." Abu Ubaydah said, "The Messenger of Allah ﷺ commanded us to cooperate, so I obey the Messenger of Allah ﷺ , even if Amr disobeys him."  

بَعَثَ رَسُولُ اللهِ ﷺ جَيْشَ ذَاتِ السَّلاسِلِ فَاسْتَعْمَلَ أَبَا عُبَيْدَةَ عَلَى الْمُهَاجِرِينَ وَاسْتَعْمَلَ عَمْرَو بْنَ الْعَاصِ عَلَىالْأَعْرَابِ فَقَالَ لَهُمَا تَطَاوَعَا قَالَ وَكَانُوا يُؤْمَرُونَ أَنْ يُغِيرُوا عَلَى بَكْرٍ فَانْطَلَقَ عَمْرٌو فَأَغَارَ عَلَى قُضَاعَةَ لِأَنَّ بَكْرًا أَخْوَالُهُ فَانْطَلَقَ الْمُغِيرَةُ بْنُ شُعْبَةَ إِلَى أَبِي عُبَيْدَةَ فَقَالَ إِنَّ رَسُولَ اللهِ ﷺ اسْتَعْمَلَكَ عَلَيْنَا وَإِنَّ ابْنَ فُلانٍ قَدِ ارْتَبَعَ أَمْرَ الْقَوْمِ وَلَيْسَ لَكَ مَعَهُ أَمْرٌ فَقَالَ أَبُو عُبَيْدَةَ إِنَّ رَسُولَ اللهِ ﷺ أَمَرَنَا أَنْ نَتَطَاوَعَ فَأَنَا أُطِيعُ رَسُولَ اللهِ ﷺ وَإِنْ عَصَاهُ عَمْرٌو