Prayers and Meditations — Paragraph 21
Source (Arabic)
رَبِّ هذِهِ أَيّامٌ الَّتِيْ فَرَضْتَ فِيها الصِّيامَ عَلَى عِبادِكَ، طُوبى لِمَنْ صَامَ خالِصًا لِوَجْهِكَ، مُنْقَطِعًا عَنِ النَّظَرِ إِلى دُونِكَ، أَيْ رَبِّ وَفِّقْنِي وَإِيَّاهُمْ عَلَى طاعَتِكَ وَإِجْرآءِ حُدُودِكَ، وَإِنَّكَ أَنْتَ المُقْتَدِرُ عَلَى ما تَشاءُ،
Translation
These are, O my Lord, the days in which Thou hast bidden Thy servants to observe the Fast. Blessed is he that observeth the Fast wholly for Thy sake and with absolute detachment from all things except Thee. Assist me and assist them, O my Lord, to obey Thee and to keep Thy precepts. Thou, verily, hast power to do what Thou choosest.