Here are 4 promised Allah mentioned in the Quran:
“So remember me;I will remember you
“QURAN 2:152”
the Prophet (ﷺ) said:“Allah says: …If my slaves remembers me in himself, I too remember him in Myself; and if he remembers Me in group of people, I remember him in a group that is better than they;..”
“Sahih al-Bukhari 7405”
if you are grateful, I will surely increase you [in favours].
“Quran 14:7”
Aishah (r.a) said:“When the Messenger of Allah(ﷺ) prayed, he would stand for so long that hisfeet became swollen…“O Messenger of Allah,Are you doing this when Allah has forgiven your past and future sins?
He (ﷺ) said:“O Aishah, should I not be a thankful slave?” “Saheeh Bukhari book 65, 4837”
“Call upon Me, I will respond to you…”
“Quran 40:60”
The prophet (ﷺ) said: “Indeed the supplication is worship.” “ibn Majah 3828”
“…And Allah will not punish them , while they seek forgiveness…”
“Quran 8:33”
Shaytan said:“By Your Glory O Lord, I will misguide Your slaves as long as their souls are in their bodies.”
So Allah said:“By My Glory & Majesty, I will continue to forgive them as long as they ask My Forgiveness!” “Musnad Ahmad 27627”