Yahya related to me from Malik from Ubaydullah ibn Abd ar-Rahmanthat Ubayd ibn Hunayn, the mawla of the family of Zayd ibn al Khattab,said that he had heard Abu Hurayra say, "I was going along with theMessenger of Allah, may Allah bless him and grant him peace, when heheard a man reciting Surat al-Ikhlas (Sura 112). The Messenger ofAllah, may Allah bless him and grant him peace, said, 'It isobligatory,' and I asked him, 'What is, Messenger of Allah?' and hesaid, 'The Garden.' I wanted to tell the man the good news but I wasafraid that I would miss the midday meal with the Messenger of Allah,may Allah bless him and grant him peace, and I preferred to eat withthe Messenger of Allah, may Allah bless him and grant him peace. WhenI went to the man afterwards I found that he had gone."
USC-MSA web (English) reference: Book 15, Hadith 18
Arabic reference: Book 15, Hadith 490