It is narrated from Sayyiduna Ibn Mas'ud (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Allah Almighty never disappoints a servant who stands (in prayer) in the middle of the night and begins Surah al-Baqarah and Al Imran; and what an excellent treasure for a person are Surah al-Baqarah and Al Imran."
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from al-Sha'bi (may Allah have mercy on him) except Layth (may Allah have mercy on him), nor from Layth (may Allah have mercy on him) except Fudayl (may Allah have mercy on him), and Bishr (may Allah have mercy on him) is alone in narrating it."
Hadith Referenceالمعجم الأوسط / باب الألف / 1772
Hadith Gradingمحدثین:فيه ليث بن أبي سليم، وفيه كلام
Hadith Takhrij«قال الهيثمي: فيه ليث بن أبي سليم وفيه كلام وهو ثقة مدلس «مجمع الزوائد ومنبع الفوائد، ج 2، ص 254»» «أخرجه الدارمي فى «مسنده» برقم: 3441، وعبد الرزاق فى «مصنفه» برقم: 6015»