The Essence
At-Tawwaab is the One who constantly turns to His servants to accept their repentance. No matter how far a person has strayed, At-Tawwaab opens the door for their return and joyfully accepts them back.
In the Quran
فَتَلَقَّى آدَمُ مِنْ رَبِّهِ كَلِمَاتٍ فَتَابَ عَلَيْهِ ۚ إِنَّهُ هُوَ التَّوَّابُ الرَّحِيمُ
"Then Adam received from his Lord [some] words, and He accepted his repentance. Indeed, it is He who is the Accepting of repentance (At-Tawwaab), the Merciful. (Surah Al-Baqarah 2:37)"
In Your Duas
رَبِّ اغْفِرْ لِي وَتُبْ عَلَيَّ إِنَّكَ أَنْتَ التَّوَّابُ الرَّحِيمُ
"My Lord, forgive me and accept my repentance. Indeed, You are the Accepting of repentance, the Merciful."
— Sunan Abi Dawud 1516