Opinion of Advocate General Szpunar delivered on 20 October 2020.#M and Others v Staatssecretaris van Justitie en Veiligheid and T.#Request for a preliminary ruling from the Raad van State (Netherlands).#Reference for a preliminary ruling – Asylum and immigration – Directive 2008/115/EC – Articles 3, 4, 6 and 15 – Refugee staying illegally in the territory of a Member State – Detention for the purpose of transfer to another Member State – Refugee status in that other Member State – Principle of non-refoulement – No return decision – Applicability of Directive 2008/115.#Case C-673/19.