Abu Hamzah (may Allah be pleased with him) said: I said to Sayyiduna Ibn Abbas (may Allah be pleased with them both): I am a man who recites quickly, and sometimes I recite the Qur'an once or twice in a single night. Ibn Abbas (may Allah be pleased with them both) said: That I should recite just one surah is more beloved to me than doing what you do (that is, completing it once or twice in one night).
If you must do it that way, then (at least) recite in such a way that you make your ears hear it and your heart retains it.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 4061
Hadith Gradingمحدثین:صحيح
Hadith Takhrij«صحيح۔ وهو عندالمصنف في الشعب 5/175/2091 وقد تقدم في الذي قبله»