اللّهُمّ اشْرَحْ بِالقُرْآنِ صَدْرِي، وَاسْتَعْمِلْ بِالقُرْآنِ…
Source: Source: duas.org · ramadan-end-farewell
allahumma ashrah bilqur’ani sadri wasta`mil bilqur’ani badani wa nawwir bilqur’ani basari wa atliq bilqur’ani lisani wa a`inni `alayhi ma abqaytany fa’innahu la hawla wa la quwwata illa bika
O Allah: (please) expand my breast through the Qur'an And use my body for the Qur'an And enlighten my sight by the Qur'an And make my tongue eloquent by the Qur'an And help me carry out its duty as long as You keep me alive, For there is neither power nor might save with You.
Reference / Source
Source: duas.org · ramadan-end-farewell