Al-Baqarah 2:234 والذين يتوفون منكم ويذرون ازواجا يتربصن بانفسهن اربعة اشهر وعشرا فاذا بلغن اجلهن فلا جناح عليكم فيما فعلن في انفسهن بالمعروف والله بما تعملون خبير ٢٣٤

The `Iddah (Waiting Period) of the Widow

This Ayah contains a command from Allah to the wives whose husbands die, that they should observe a period of `Iddah of four months and ten nights, including the cases where the marriage was consummated or otherwise, according to the consensus (of the scholars