Hazrat Shaikh Moulana Muhammad Zakariyya (rahmatullahi ‘alaih) once mentioned to an Aalim:
Undoubtedly it is important to fulfil your duties and obligations you owe to the Madrasah. However, despite your busy schedule and commitments it is necessary for you to avail yourself for some while to recite the Qur’an. Not reciting the Qur’an is a great loss to a Believer. As for a Haafidh of the Qur’an, he does not need to look in the Qur’an and recite; rather wherever he is, he can recite from memory. I observed some of my elders that they never left out the tilaawat of the Qur’an. Even while travelling by train, I used to see them reciting the Qur’an. (Qutbul Aqtaab Hazrat Sheikhul Hadith Moulana Muhammad Zakariyya (rahmatullahi ‘alaih) pg. 466)