Anas narrated that the Messenger of Allah said:

“Whoever says in the morning: ‘O Allah we have reached morning, calling You to witness, and calling the carriers of Your Throne to witness, and Your angels, and all of Your creation, that You are Allah, none has the right to be worshipped by You, Alone, without partner, and that Muhammad is Your slave and Your Messenger. (Allahumma Asbahna Nush-hiduka Wa Nush-hidu Hamalata Arshika Wa Mala’ikataka Wa Jami’a Khalqika Bi-Annaka Allah, La Ilaha Illa Anta Wahdaka La Sharika Laka Wa Anna Muhammadan Abduka Wa Rasulika)’ Allah will forgive him for whatever he does that day, and if he says it in the evening, Allah will forgive him for whatever sin he commits that night.”

حَدَّثَنَا عَبْدُ اللَّهِ بْنُ عَبْدِ الرَّحْمَنِ، أَخْبَرَنَا حَيْوَةُ بْنُ شُرَيْحٍ، وَهُوَ ابْنُ يَزِيدَ الْحِمْصِيُّ عَنْ بَقِيَّةَ بْنِ الْوَلِيدِ، عَنْ مُسْلِمِ بْنِ زِيَادٍ، قَالَ سَمِعْتُ أَنَسًا، يَقُولُ إِنَّ رَسُولَ اللَّهِ ﷺ قَالَ " مَنْ قَالَ حِينَ يُصْبِحُ اللَّهُمَّ أَصْبَحْنَا نُشْهِدُكَ وَنُشْهِدُ حَمَلَةَ عَرْشِكَ وَمَلاَئِكَتَكَ وَجَمِيعَ خَلْقِكَ بِأَنَّكَ الله لاَ إِلَهَ إِلاَّ أَنْتَ وَحْدَكَ لاَ شَرِيكَ لَكَ وَأَنَّ مُحَمَّدًا عَبْدُكَ وَرَسُولُكَ . إِلاَّ غَفَرَ اللَّهُ لَهُ مَا أَصَابَ فِي يَوْمِهِ ذَلِكَ وَإِنْ قَالَهَا حِينَ يُمْسِي غَفَرَ اللَّهُ لَهُ مَا أَصَابَ فِي تِلْكَ اللَّيْلَةِ مِنْ ذَنْبٍ " .

قَالَ أَبُو عِيسَى هَذَا حَدِيثٌ غَرِيبٌ .