The Messenger of Allah ﷺ said, "Whoever says ten times after the Maghrib or Fajr prayer, 'There is no god but Allah alone, with no partner. To Him belongs the dominion and to Him belongs all praise. He gives life and causes death, and He has power over all things,' Allah will send guardian angels to watch over him until morning, and from morning until evening."
أن رسول الله ﷺ قال: من قال بعد المغرب أو الصبح: لا إله إلا الله وحده لا شريك له له الملك وله الحمد يحيي ويميت وهو على كل شيء قدير عشر مرات بعث الله له مسلحة يحرسونه حتى يصبح ومن حين يصبح حتى يمسي.
Nasai narrated it in Amal al-Yawm wal-Layla (578) via Ibn Wahb, who said, Umar bin Harith told me that Jullah told him that Abu Abdul-Rahman Maafiri told him that Ammar Sabai told him that a man from the Ansar told him, and he related it.Its isnad is hasan because of Jullah Abu Kathir, who is truthful (saduq), and the anonymity of the companion does not harm it. Ibn Hajar graded the hadith hasan in Nataij Afkar (17/3). His statement "Ammar" is a mistake, and the correct form is "Umara".Tirmidhi (3534) and Nasai in Amal al-Yawm wal-Layla (577/m) both narrated it from Qutayba, who said, Layth told us, from Jullah Abu Kathir, from Abu Abdul-Rahman Hubli, from Umara bin Shabib Sabai, who said, the Messenger of Allah ﷺ said, "Whoever says, 'There is no god but Allah alone, with no partner, His is the dominion and His is the praise, He gives life and causes death, and He has power over all things,' ten times after Maghrib, Allah will send a guard to protect him from Satan until morning, and Allah will record for him ten good deeds that are decisive, and will erase from him ten sins that are ruinous, and it will be equivalent for him to freeing ten believing slaves."Then Tirmidhi said, "This is a gharib hadith, we do not know it except through the report of Layth bin Saad, and we do not know of Umara having heard directly from the Prophet ﷺ." End of quote.I say, there is disagreement over whether Umara bin Shabib was a companion. Ibn Hibban said in his Thiqat, "Whoever claims that he was a companion has erred." Some added between Ibn Shabib and the Prophet ﷺ a man from the Ansar, as in the earlier narration, and that is the correct version.His word "guard" (maslaha) means protectors.Similar in meaning is what Abdul-Hameed, the freedman of Banu Hashim, reported, that his mother told him, and she used to serve some of the daughters of the Prophet ﷺ, that a daughter of the Prophet ﷺ told her that the Prophet ﷺ used to teach her, saying, "Say when you rise in the morning, 'Glory be to Allah and praise be to Him, there is no power except through Allah, whatever Allah wills happens, and whatever He does not will does not happen, know that Allah has power over all things, and that Allah encompasses all things in knowledge.' Whoever says these words in the morning will be protected until evening, and whoever says them in the evening will be protected until morning."Abu Dawud (5075) and Nasai in Kubra (9756) both narrated it via Abdullah bin Wahb, who said, Amr told me that Salim Farra told him that Abdul-Hameed, the freedman of Banu Hashim, told him that his mother told him, and she used to serve some of the daughters of the Prophet ﷺ, that a daughter of the Prophet ﷺ told her, and she related it.Abdul-Hameed, the freedman of Banu Hashim, has no one mentioned among those who transmitted from him except Salim Farra, and no one has verified him as reliable except that Ibn Hibban mentioned him in his Thiqat. For this reason Ibn Hajar said in Taqrib, "Acceptable," meaning when corroborated, and I have not found a corroborator for him. As for his mother, Ibn Hajar said, "Acceptable," meaning when corroborated, and I have not found a corroborator for her either.