Narrated Abu Hurairah:"I went out with the Messenger of Allah and heard a man reciting Qul Huwa Allahu Ahad [Allahus-Samad] so the Messenger of Allah (ﷺ) said: 'It is obligatory.' I said: 'What is obligatory?' He said: 'Paradise

English translation · Jami' at-Tirmidhi