exact ⟨f, hf, (associated_isUnit_mul_right_iff ha₁).2 hf₂⟩
case intro.intro.refine'_2.inl.intro.intro
R : Type u_1
inst✝ : CommMonoidWithZero R
l : Multiset R
a : R
s : Multiset R
hind : (∀ y ∈ s, IsUnit y ∨ Prime y) → ∃ f, (∀ b ∈ f, Prime b) ∧ Associated (Multiset.prod f) (Multiset.prod s)
hs : ∀ y ∈ s, IsUnit y ∨ Prime y
ha₁ : IsUnit a
f : Multiset R
hf : ∀ b ∈ f, Prime b
hf₂ : Associated (Multiset.prod f) (Multiset.prod s)
⊢ ∃ f, (∀ b ∈ f, Prime b) ∧ Associated (Multiset.prod f) (a * Multiset.prod s)
no goals