How can an engineering student who is also involved in a Quran memorization circle systematically reflect on the Quran, what is the recommended daily amount for that, how can he retain what he has previously reflected upon, and how can he know that he has truly reflected?

Reflecting on the Quran (تدبر القرآن) means contemplating its meanings and focusing one's thoughts upon them. It is not exclusive to students of knowledge; rather, it is required of everyone according to their understanding and ability. It does not contradict studying engineering or attending Quran memorization circles. Among the things that aid in reflection is studying the science of Tafsir (exegesis). The amount of Quran read with reflection varies from person to person, and reflection must translate into a real impact on one's conduct. One should frequently recite and reflect upon the Quran, for it contains endless blessings and goodness.