اللَّهُمَّ مَا أَصْبَحَ بِي مِنْ نِعْمَةٍ أَوْ بِأَحَدٍ مِنْ خَلْقِكَ فَمِنْكَ وَحْدَكَ لَا شَرِيكَ لَكَ، فَلَكَ الْحَمْدُ وَلَكَ الشُّكْرُ
The Messenger of Allah (peace be upon him) said: 'Whoever says in the morning: Allahumma ma asbaha bi min ni'matin aw bi ahadin min khalqika fa minka wahdaka la sharika lak, falakal-hamdu wa lakash-shukr — he has fulfilled the gratitude of that day. And whoever says it in the evening has fulfilled the gratitude of that night.'