He who is ever eagerly ready to accept repentance and to forgive sins.
“Except those who repent and make amends and openly declare (the Truth): TO THEM I TURN; FOR I AM OFT-RETURNING, Most Merciful.”
(2:160) The Holy Quran
“Know they not that ALLAH DOTH ACCEPT RE- PENTANCE FROM HIS VOTARIES and receives their gifts of charity, and that ALLAH IS VERILY HE, THE OFT-RETURNING, Most Merciful?”
(9:104) The Holy Quran
From the root t-w-b with the classical Arabic connotations: to return to return to goodness, to repent to be restored to be rewarded for deeds to be repeatedly summoned or called.