Under Sunni law, no witnesses are required to be present at the time of pronouncing of Talaq while under Shia Law, the presence of two male witnesses is necessary

Sunni law recognizes talaq-ul-sunnat and talaq-ul-biddat both, whereas Shia Law permits Talaq-ul-Sunnat only

According to Sunnis, talaq may be given orally or in writing but the Shias do not recognize talaq in writing unless the husband is physically incapable of pronouncing it