The Messenger of Allah ﷺ said, "Whoever says when evening comes, 'I am content with Allah as my Lord, with Islam as my religion, and with Muhammad as my Prophet,' it is a right upon Allah that He grant him contentment."
حدثنا أبو سعيد الأشج حدثنا عقبة بن خالد عن أبي سعد سعيد بن المرزبان عن أبي سلمة
قال رسول الله ﷺ من قال حين يمسي رضيت بالله ربا وبالإسلام دينا وبمحمد نبيا كان حقا على الله أن يرضيه
[Hasan] Tabarani reported it in Al-Duaa, no. 304, from the hadith of Abu Saad Al-Baqqal, Saeed bin Al-Marzuban, through this route, and he is daif. The hadith has a hasan corroborating witness in Abu Dawud, no. 5072, which Ibn Hajar graded hasan.