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.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
quran:4:71 –

O you who have believed, take your precaution and ˹either˺ go forth in companies or go forth all together.  

O you who believe, take your precautions, against your enemy, that is, be wary of him and be vigilant against him; then move forward, prepare to fight him, in companies, in separate groups, one raiding party followed by the next; or move forward all together, in one assembly.
القرآن:٤:٧١ –

يَا أَيُّهَا الَّذِينَ آمَنُوا خُذُوا حِذْرَكُمْ فَانْفِرُوا ثُبَاتٍ أَوِ انْفِرُوا جَمِيعًا  

{يا أيها الذين آمنوا خذوا حذركم} من عدوكم أي احترزوا منه وتيقظوا له {فانفروا} انهضوا إلى قتاله {ثُبَاتٍ} متفرقين سرية بعد أخرى {أو انفروا جميعا} مجتمعين.