Surah As-Saf, Verse 11

تُؤۡمِنُونَ بِٱللَّهِ وَرَسُولِهِۦ وَتُجَٰهِدُونَ فِي سَبِيلِ ٱللَّهِ بِأَمۡوَٰلِكُمۡ وَأَنفُسِكُمۡۚ ذَٰلِكُمۡ خَيۡرٞ لَّكُمۡ إِن كُنتُمۡ تَعۡلَمُونَ١١

tu'minūna bil-lahi warasūlihi watujāhidūna fī sabīli l-lahi bi-amwālikum wa-anfusikum dhālikum khayrun lakum in kuntum taʿlamūna

[It is that] you believe in Allāh and His Messenger and strive in the cause of Allāh with your wealth and your lives. That is best for you, if you only knew.