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:8:44 –

And ˹remember˺ when He showed them to you, when you met, as few in your eyes, and He made you ˹appear˺ as few in their eyes so that Allah might accomplish a matter already destined. And to Allah are ˹all˺ matters returned.  

And when God made you see them, O believers, when you met — in your eyes as few, as 70 or 100, when they were ˹in fact˺ 1000, so that you would advance against them; and He made you seem as few in their eyes, so that they would advance and not turn back from fighting you — this was before close combat had begun, but when it began, He made them ˹the disbelievers˺ see these ˹believers˺ as twice their number, as stated in sūrat Āl ‘Imrān ˹Q. 3:13˺ — so that God might conclude a matter that was to be done; and to God all things are returned, reverting.
القرآن:٨:٤٤ –

وَإِذْ يُرِيكُمُوهُمْ إِذِ الْتَقَيْتُمْ فِي أَعْيُنِكُمْ قَلِيلًا وَيُقَلِّلُكُمْ فِي أَعْيُنِهِمْ لِيَقْضِيَ اللَّهُ أَمْرًا كَانَ مَفْعُولًا ۗ وَإِلَى اللَّهِ تُرْجَعُ الْأُمُورُ  

{وإذ يريكموهم} أيها المؤمنون {إذ التقيتم في أعينكم قليلا} نحو سبعين أو مائة وهم ألف لتقدموا عليهم {ويقللكم في أعينهم} ليقدموا ولا يرجعوا عن قتالكم وهذا قبل التحام الحرب، فلما التحم أراهم إياهم مثليهم كما في آل عمران {ليقضيَ الله أمرا كان مفعولا وإلى الله ترجع} تصير {الأمور}.