∀ {M : Type u_2} {α : Type u_3} [inst : MeasurableSpace M] [inst_1 : Mul M] {m : MeasurableSpace α} {f : α → M}
  {μ : MeasureTheory.Measure α} [MeasurableMul M], AEMeasurable f μ → ∀ (c : M), AEMeasurable (fun x => c * f x) μ