Narrated Ibn 'Abbas:
that the Messenger of Allah (ﷺ) said: "Indeed, the one who does not have the Qur'an inside him (his heart), is like the ruined house." (RU)
English reference (RU): Vol. 5, Book 42, Hadith 2913 (RU)
Arabic reference (RU): Book 45, Hadith 3161 (RU)