then when they have completed their term either retain them honourably or separate from them honourably and take the witness of two honest men from among yourselves and bear witness for the sake of allah. whoever believes in allah and the last day is advised to this. whoever is wary of allah he shall make for him a way out 
فإذا بلغن أجلهن فأمسكوهن بمعروف أو فارقوهن بمعروف وأشهدوا ذوي عدل منكم وأقيموا الشهادة لله ذلكم يوعظ به من كان يؤمن بالله واليوم الآخر ومن يتق الله يجعل له مخرجا