∀ {C : Type u_2} [inst : CategoryTheory.Category.{u_1, u_2} C] [inst_1 : CategoryTheory.Limits.HasZeroMorphisms C]
  {X Y : C} {f : X ⟶ Y} {P : C} {ι ι' : P ⟶ X} {w : CategoryTheory.CategoryStruct.comp ι f = 0},
  ι = ι' → CategoryTheory.CategoryStruct.comp ι' f = 0