Al-Agharr al-Muzani said (Musaddad in his version of this tradition said that he was a Companion of the Prophet): The Messenger of Allah ﷺ said: My heart is invaded by unmindfulness, and I ask Allah's pardon a hundred times in the day.
Hadith Referenceسنن ابي داود / كتاب تفريع أبواب الوتر / 1515
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:صحيح مسلم (2702)
1515. English Commentary: The days and nights of the Messenger of Allah (sallallahu alayhi wa sallam)—may my mother and father be sacrificed for him—were spent in obedience to Allah, and there was not a single moment of heedlessness in them. Moreover, his blessed heart was pure and elevated above those occurrences that befall ordinary humans. Despite this, his statement that “a covering comes over my heart” is difficult for us to fully explain. For this reason, the master of linguistics, Al-Asma‘i, said: “If this matter concerned the heart of anyone other than a Prophet, I would have spoken about it.” Allamah Sindhi also prefers consigning the knowledge (tafwid) of this matter (to Allah), and says that, by way of explanation and understanding, it is only to the extent that your (sallallahu alayhi wa sallam) state would become such that you would seek forgiveness for it. [‘Awn al-Ma‘bud] When the Messenger of Allah (sallallahu alayhi wa sallam), even while being a Messenger, would seek forgiveness, then what should be the state of ordinary people?
Source: Sunan Abu Dawood – Commentary by Shaykh Umar Farooq Saeedi, Page: 1515
Abu Hurairah (RA) reported Allah's Apostle (ﷺ) as saying: If any one of you is invited to a meal when he is fasting, he should say: "I am fasting."
Shaykh Maulana Abdul Aziz Alvi
Hadith Commentary: Benefits and Issues: ➊ Although concealing voluntary good deeds is better, it is permissible to disclose them when necessary. ➋ Likewise, it is not necessary to break the fast (sawm) for an invitation; one may attend and offer supplications for goodness and blessings. ➌ If the host insists and it is necessary to consider his feelings, then the fast may also be broken.
Source: Tuhfat al-Muslim: Commentary on Sahih Muslim, Page: 2702