An-Nisa' - 4:17

إِنَّمَا التَّوْبَةُ عَلَى اللّهِ لِلَّذِينَ يَعْمَلُونَ السُّوَءَ بِجَهَالَةٍ ثُمَّ يَتُوبُونَ مِن قَرِيبٍ فَأُوْلَـئِكَ يَتُوبُ اللّهُ عَلَيْهِمْ وَكَانَ اللّهُ عَلِيماً حَكِيماً
[4:17]
Repentance with Allah is only for those who do evil in ignorance, then turn (to Allah) soon, so these it is to whom Allah turns (mercifully), and Allah is ever Knowing, Wise.
Allah accept the repentance of those who do evil in ignorance and repent soon afterwards; to them will Allah turn in mercy: For Allah is full of knowledge and wisdom.
Forgiveness is only incumbent on Allah toward those who do evil in ignorance (and) then turn quickly (in repentance) to Allah. These are they toward whom Allah relenteth. Allah is ever Knower, Wise.