Ibn Rajab al-Ḥanbalī: “Know that a believer combines himself in the month of Ramaḍān between 2 Jihād (against) his Nafs; Jihād in the day upon fasting and Jihād in the night upon Qiyām (voluntary prayer) so whoever gathers between these 2 Jihād and fulfills (what) is of their rights, will be sufficed with a reward which is without any account (i.e unlimited).”

‎● [لطائف المعارف ص ١٧١]