﴿ لَقَدْ نَصَرَكُمُ ٱللَّهُ فِى مَوَاطِنَ كَثِيرَةٍۢ ۙ وَيَوْمَ حُنَيْنٍ ۙ إِذْ أَعْجَبَتْكُمْ كَثْرَتُكُمْ فَلَمْ تُغْنِ عَنكُمْ شَيْـًۭٔا وَضَاقَتْ عَلَيْكُمُ ٱلْأَرْضُ بِمَا رَحُبَتْ ثُمَّ وَلَّيْتُم مُّدْبِرِينَ ﴾

“Indeed, God has succoured you on many battlefields, [when you were few;] and [He did so, too,] on the Day of Hunayn, when you took pride in your great numbers and they proved of no avail whatever to you -for the earth, despite all its vastness, became [too] narrow for you and you turned back, retreating:”

Please check ayah 9:27 for complete tafsir.