Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
tirmidhi:1716Ibn Abū ʿUmar > Sufyān > Yazīd b. Abū Ziyād > ʿAbd al-Raḥman b. Abū Laylá > Ibn ʿUmar

"The Messenger of Allah sent us on a military expedition, and the people turned to escape. So we arrived in Al-Madinah and concealed ourselves in it and we said: 'We are ruined.' Then we went to the Messenger of Allah ﷺ and we said: 'O Messenger of Allah! We are those who fled.' He said: 'Rather you are Al-'Akkarun (those who are regrouping) and I am your reinforcement.  

[Abu 'Eisa said:] This Hadith is Hasan Gharib. We do not know of it except as a narration of Yazid bin Abi Ziyad. And the meaning of his saying: "The people turned to escape" is that they fled from the fighting. As for the meaning of his saying: "Rather you are Al-'Akkarun," the 'Akkar is the one who flees to his Imam in order that he may help him, it does not mean fleeing from the advancing army.
الترمذي:١٧١٦حَدَّثَنَا ابْنُ أَبِي عُمَرَ حَدَّثَنَا سُفْيَانُ عَنْ يَزِيدَ بْنِ أَبِي زِيَادٍ عَنْ عَبْدِ الرَّحْمَنِ بْنِ أَبِي لَيْلَى عَنِ ابْنِ عُمَرَ قَالَ

بَعَثَنَا رَسُولُ اللَّهِ ﷺ فِي سَرِيَّةٍ فَحَاصَ النَّاسُ حَيْصَةً فَقَدِمْنَا الْمَدِينَةَ فَاخْتَبَيْنَا بِهَا وَقُلْنَا هَلَكْنَا ثُمَّ أَتَيْنَا رَسُولَ اللَّهِ ﷺ فَقُلْنَا يَا رَسُولَ اللَّهِ نَحْنُ الْفَرَّارُونَ قَالَ بَلْ أَنْتُمُ الْعَكَّارُونَ وَأَنَا فِئَتُكُمْ  

قَالَ أَبُو عِيسَى هَذَا حَدِيثٌ حَسَنٌ لاَ نَعْرِفُهُ إِلاَّ مِنْ حَدِيثِ يَزِيدَ بْنِ أَبِي زِيَادٍ وَمَعْنَى قَوْلِهِ فَحَاصَ النَّاسُ حَيْصَةً يَعْنِي أَنَّهُمْ فَرُّوا مِنَ الْقِتَالِ وَمَعْنَى قَوْلِهِ بَلْ أَنْتُمُ الْعَكَّارُونَ وَالْعَكَّارُ الَّذِي يَفِرُّ إِلَى إِمَامِهِ لِيَنْصُرَهُ لَيْسَ يُرِيدُ الْفِرَارَ مِنَ الزَّحْفِ

See similar narrations below:

Collected by Bayhaqī
bayhaqi:18082Abū Zakariyyā b. Abū Isḥāq al-Muzakkī > Abū al-ʿAbbās Muḥammad b. Yaʿqūb > al-Rabīʿ b. Sulaymān > al-Shāfiʿī > Ibn ʿUyaynah > Yazīd b. Abū Ziyād > ʿAbd al-Raḥman b. Abū Laylá > Ibn ʿUmar > Baʿathanā

[Machine] The Messenger of Allah ﷺ was on a military expedition, and they encountered the enemy. The people were in a state of panic, so we came to the city and opened its gate. We said, "O Messenger of Allah, we are the ones who fled." He replied, "No, you are the conquerors, and I am with you."  

البيهقي:١٨٠٨٢أَخْبَرَنَا أَبُو زَكَرِيَّا بْنُ أَبِي إِسْحَاقَ الْمُزَكِّي ثنا أَبُو الْعَبَّاسِ مُحَمَّدُ بْنُ يَعْقُوبَ أنبأ الرَّبِيعُ بْنُ سُلَيْمَانَ أنبأ الشَّافِعِيُّ أنبأ ابْنُ عُيَيْنَةَ عَنْ يَزِيدَ بْنِ أَبِي زِيَادٍ عَنْ عَبْدِ الرَّحْمَنِ بْنِ أَبِي لَيْلَى عَنِ ابْنِ عُمَرَ ؓ قَالَ بَعَثَنَا

رَسُولُ اللهِ ﷺ فِي سَرِيَّةٍ فَلَقُوا الْعَدُوَّ فَحَاصَ النَّاسُ حَيْصَةً فَأَتَيْنَا الْمَدِينَةَ فَفَتَحْنَا بَابَهَا وَقُلْنَا يَا رَسُولَ اللهِ نَحْنُ الْفَرَّارُونَ فَقَالَ بَلْ أَنْتُمُ الْعَكَّارُونَ وَأَنَا فِئَتُكُمْ