When does the one-year period for the deferred portion of blood money (Diya) begin?

Primary text

The one-year period for the deferred portion of blood money (Diya) begins from the moment the Diya becomes obligatory. This view is held by Al-Shafi'i. For the Diya of a life, the period begins from the time of death, whether the killing was directly culpable or resulted from the progression (sarayah) of an injury. If the Diya is for an injury, the start date depends on whether the injury healed without progression; if it healed without progression (like a severed hand that heals), the period starts from the moment of cutting. This is supported by the principle that it is a deferred property payment, making the term start upon obligation, analogous to deferred debt or Salam contracts.