The Messenger of Allah ﷺ said, "I had better not find any of you placing one leg over the other singing, while neglecting Surah al-Baqarah without reciting it. Satan flees from a house in which Surah al-Baqarah is recited, and indeed the most barren of houses is the one empty of the Book of Allah ."
قال رسول الله ﷺ: لا ألفين أحدكم يضع إحدى رجليه على الأخرى يتغنى، ويدع سورة البقرة يقرؤها، فإن الشيطان ينفر من البيت تقرأ فيه سورة البقرة، وإن أصفر البيوت الجوف الصفر من كتاب الله عز وجل.
Nasai narrated it in Kubra (10733), from Muhammad bin Nasr, who said, Ayub told us, and he is Ibn Sulayman bin Bilal, who said, Abu Bakr told me, from Sulayman, from Muhammad bin Ajlan, from Abu Ishaq, from Abu Ahwas, from Abdullah bin Masud, and he related it. Its chain of transmission is hasan because of Muhammad bin Ajlan, for his hadith is hasan. Abu Bakr is Ibn Abu Uways, well known by his kunya, and one of the men found in the Sahih.Darimi (3420), Tabarani in Kabir (2/138), and Hakim (1/561) all narrated it, through the route of Asim bin Bahdala, from Abu Ahwas, from Ibn Masud, as a stopped narration, with the wording, "Everything has a hump, and the hump of the Quran is Surah Baqarah. Everything has a core, and the core of the Quran is the mufassal section. The devils flee from the house in which Surah Baqarah is recited. And the emptiest of houses is the hollow one that has nothing of the Book of Allah in it."It has also been narrated as a raised narration, but the correct version is the stopped one.His saying, "the emptiest of houses" means the house that is empty, in which the Book of Allah is not recited, and it is derived from emptiness. His saying, "the empty hollow" means the heart that is empty, retaining nothing of the Book of Allah.As for his saying, "Everything has a hump... and everything has a core," other hadiths have been narrated with a similar meaning, but none of them are sahih, as will come in the chapter that follows this one.