Whoever trusts Allah, He is enough. Take the asbāb; place the tawakkul.

Q 65:3 is the structural Quranic charter of tawakkul. The Prophet ﷺ's bird-hadith elaborates: if real tawakkul were operational, provision would arrive as effortlessly as it does for birds (the bird does not store; the bird does not calculate; the bird trusts and leaves; the provision arrives). The classical scholars (Ibn al-Qayyim's al-Fawāʾid, Ibn Rajab's Jāmiʿ al-ʿUlūm wa-l-Ḥikam) wrote at length on the operational pairing of asbāb (causes/means) with tawakkul (trust): the believer takes the asbāb (the bird leaves the nest), then places tawakkul (the bird does not control where the food comes from). Modern Muslims often fail one of the two: either over-relying on asbāb (without tawakkul) or under-using asbāb (claiming tawakkul as excuse for laziness). The classical balance: take all the asbāb you can, then place tawakkul on the outcome. The verse-promise (ḥasbuh: He is enough) is structurally severe: nothing else is needed if Allah is enough; the believer's task is to operationalize this sufficiency in his actual life.