question #3 Sahih al-Bukhari 6306, Book 80, Hadith 3 : How does one’s faith impact the effectiveness of supplications for forgiveness?

The Prophet (ﷺ) said “The most superior way of asking for forgiveness from Allah is: ‘Allahumma anta
Rabbi la ilaha illa anta, Khalaqtani wa ana `Abduka, wa ana `ala `ahdika wa wa`dika mastata`tu,
A`udhu bika min Sharri ma sana`tu, abu’u Laka bini`matika `alaiya, wa abu’u laka bidhanbi faghfir lee
fa innahu la yaghfiru adhdhunuba illa anta.” The Prophet (ﷺ) added. “If somebody recites it during the day
with firm faith in it, and dies on the same day before the evening, he will be from the people of
Paradise; and if somebody recites it at night with firm faith in it, and dies before the morning, he will
be from the people of Paradise.”