صحیح ابن حبان
Ibn Hibban
كتاب الرقائق
Book of Heart-Softeners
باب قراءة القرآن - ذكر الزجر عن أن يختم القرآن في أقل من ثلاثة أيام إذ استعمال ذلك يكون أقرب إلى التدبر والتفهم
Chapter on Recitation of the Quran – On the warning against completing the Quran in less than three days, as this is closer to reflection and understanding
2 hadith
Hadith 758
Sayyiduna Abdullah bin Amr (may Allah be pleased with him) narrates: The Noble Prophet (peace and blessings be upon him) said: "Whoever recites (i.e., the entire Qur'an) in less than three days has not understood it. (Or, that person does not possess understanding and comprehension)."
Hadith 759
Sayyiduna Jundub bin Abdullah (may Allah be pleased with him) narrates as a marfu’ hadith: The Prophet Muhammad (peace and blessings be upon him) said: “Continue reciting the Qur’an as long as your hearts are inclined towards it, and when your nature begins to become distracted, then get up (by stopping its recitation).”