وَ الْمُطَلَّقَةُ تَعْتَدُّ مِنْ يَوْمَ طَلَّقَهَا زَوْجُهَا وَ الْمُتَوَفَّى عَنْهَا زَوْجُهَا تَعْتَدُّ مِنْ يَوْمِ يَبْلُغُهَا الْخَبَرُ لِأَنَّ هَذِهِ تُحِدُّ وَ الْمُطَلَّقَةُ لَا تُحِدُّ.
As for a divorced woman, her waiting period begins from the day her husband divorces her. However, the waiting period for a woman whose husband has died begins from the day she receives the news of his death because she must observe mourning (ihdad), whereas a divorced woman is not required to observe mourning.