[Q.] Is it better to recite the Qurʾān at night or go to sleep and recite it during the day after the prayers?

[A.] He should read whatever is easy for him during the night or during the day. Recitation during the night is better because Jibrīl (ʿalayhis-salām) taught the Prophet (ṣallAllāhu ʿalayhi wa sallam) the Qurʿān at night. So its recitation at night is better.

Reference: Fatāwā Ramaḍāniyyah – Shaykh Ṣāliḥ al-Fawzān [Source: http://www.alfawzan.af.org.sa/node/14891]