∀ {Ω : Type u_1} {F : Type u_2} [mΩ : MeasurableSpace Ω] {μ : MeasureTheory.Measure Ω} [MeasureTheory.IsFiniteMeasure μ]
  {s : Set Ω} [inst : NormedAddCommGroup F] [inst_1 : NormedSpace ℝ F] [inst_2 : CompleteSpace F],
  MeasurableSet s →
    ∀ {f : Ω → F},
      MeasureTheory.Integrable f μ →
        μ[f | MeasurableSpace.generateFrom {s}] =ᵐ[μ.restrict s] fun x => ∫ (x : Ω), f x ∂μ[|s]