(13) باب مَا جَاءَ فِي الدُّعَاءِ إِذَا أَصْبَحَ وَإِذَا أَمْسَى
Thawban (ra) said:
"The Messenger of Allah (ﷺ) said: 'Whoever says when he reaches the evening: "I am pleased with Allah as (my) Lord, with Islam as (my) religion, and with Muhammad (ﷺ) as (my) Prophet (Raḍītu billāhi rabban wabil-Islāmi dīnan wa bi-Muḥammadin nabiyyan) it is a duty upon Allah to please him.'" (Hasan Gharib)
Reference: Jami` at-Tirmidhi 3389
In-book reference: Book 48, Hadith 20
English translation: Vol. 6, Book 45, Hadith 3389