Reliance on Allah (Tawakkul) vs. Material Strength

لَقَدْ نَصَرَكُمُ ٱللَّهُ فِى مَوَاطِنَ كَثِيرَةٍ ۙ وَيَوْمَ حُنَيْنٍ ۙ إِذْ أَعْجَبَتْكُمْ كَثْرَتُكُمْ فَلَمْ تُغْنِ عَنكُمْ شَيْـًٔا وَضَاقَتْ عَلَيْكُمُ ٱلْأَرْضُ بِمَا رَحُبَتْ ثُمَّ وَلَّيْتُم مُّدْبِرِينَ

Allāh has already given you victory in many regions and [even] on the day of Ḥunayn, when your great number pleased you, but it did not avail you at all, and the earth was confining for you with [i.e., in spite of] its vastness; then you turned back, fleeing.