لِّلَّذِينَ يُؤْلُونَ مِن نِّسَآئِهِمْ تَرَبُّصُ أَرْبَعَةِ أَشْهُرٍ فَإِنْ فَآؤُوا فَإِنَّ اللّهَ غَفُورٌ رَّحِيمٌ
[2:226]
Those who swear that they will not go in to their wives should wait four months; so if they go back, then Allah is surely Forgiving, Merciful.
For those who take an oath for abstention from their wives, a waiting for four months is ordained; if then they return, Allah is Oft-forgiving, Most Merciful.
Those who forswear their wives must wait four months; then, if they change their mind, lo! Allah is Forgiving, Merciful.