Surah Al-Anfal, ayah 19

8:19

إِن تَسۡتَفۡتِحُواْ فَقَدۡ جَآءَكُمُ ٱلۡفَتۡحُۖ وَإِن تَنتَهُواْ فَهُوَ خَيۡرٞ لَّكُمۡۖ وَإِن تَعُودُواْ نَعُدۡ وَلَن تُغۡنِيَ عَنكُمۡ فِئَتُكُمۡ شَيۡـٔٗا وَلَوۡ كَثُرَتۡ وَأَنَّ ٱللَّهَ مَعَ ٱلۡمُؤۡمِنِينَ ١٩

In tastaftihū faqad jā'akumul-fathu wa in tantahū fahuwa khayrul lakum wa in ta'ūdū na'ud walan tughniya 'ankum fi atukum shay'an walaw kathurat wa annallāha ma'al-mu'minīn

If you [disbelievers] seek the decision [i.e., victory] - the decision [i.e., defeat] has come to you. And if you desist [from hostilities], it is best for you; but if you return [to war], We will return, and never will you be availed by your [large] company at all, even if it should increase; and [that is] because Allāh is with the believers.