What is the authenticity of the widespread information regarding the ten types of angels surrounding humans and their specific functions, and regarding their alternation at dawn (Fajr) and afternoon (Asr) times, citing as evidence the hadith: "Whoever abandons the Asr prayer, his deeds will be nullified"?

Belief in angels is one of the pillars of faith. Among them are the guardian angels who protect the servant and record his deeds. They are mentioned in the Holy Quran. A hadith narrated by al-Tabari details the number of angels assigned to each human being and their tasks: an angel on the right for good deeds and another on the left for bad deeds, two angels in front of and behind the servant, an angel holding his forelock, two angels on the lips to supplicate for the Prophet, an angel guarding the mouth from harmful things entering it, and two angels on the eyes. Thus, there are ten angels during the day and another ten at night. Some parts of this hadith have been authenticated by other corroborating evidence, such as the succession of angels by night and day, their recording of the servant's deeds, and the angels raising the wisdom of the humble person. As for the details of angels monitoring supplications for the Prophet and guarding the mouth and eyes, there is no definitive proof for them other than the general statement in Surat al-Ra'd about angels guarding humans by Allah's command.