A Muslim who pays riba-free but neglects zakāt, mismanages inheritance, or earns from a poisoned source has not actually solved the wealth-and-religion problem. They have solved one quadrant of it. This section is the other three.
The three obligations
IV.1
Zakāt
The third pillar — calculated honestly across cash, gold, equities, businesses, and receivables.
IV.2
Inheritance (Mawārīth)
Islamic distribution made secure under your jurisdiction's succession law — the forced-heirship / family-provision problem.
IV.3
Halal income audit
The source check. Industry, role, compensation structure, side income — the rest of the income picture.
The believer who avoids ribā but ignores zakāt has misunderstood what shariah-compliant wealth is for. Avoidance is the half; deployment toward the obligations is the other. The two together complete the picture.
Why this section exists separately
These three obligations cut across every tier of the Playbook. They apply to the Tier 1 graduate building an emergency fund as much as to the Tier 3 family with significant capital. Putting them in their own section lets them be the standalone reference they need to be.