Ubaydullah bin Abdullah reported,

Marwan sent Abdullah bin Utbah to Subayah bint Harith to ask her about the ruling the Messenger of Allah ﷺ had given her. She told him that she had been married to Saad bin Khawla, who died during the Farewell Pilgrimage. He had been a veteran of Badr. She gave birth before four months and ten days had passed since his death.After she had recovered from her postnatal bleeding and had applied kohl, Abu Sanabil, meaning Ibn Bakak, met her and said to her, "Hold back, or something to that effect. Perhaps you want to remarry. You must wait four months and ten days from your husband's death."She said, "So I went to the Prophet ﷺ and mentioned to him what Abu Sanabil bin Bakak had said."The Prophet ﷺ said to her, "You became permitted to remarry the moment you gave birth."

حدثنا عبد الرزاق أخبرنا معمر عن الزهري

عن عبيد الله بن عبد الله قال

أرسل مروان عبد الله بن عتبة إلى سبيعة بنت الحارث يسألها عما أفتاها به رسول الله ﷺ فأخبرته أنها كانت تحت سعد ابن خولة فتوفي عنها في حجة الوداع وكان بدريا فوضعت حملها قبل أن ينقضي أربعة أشهر وعشر من وفاته فلقيها أبو السنابل يعني ابن بعكك حين تعلت من نفاسها وقد اكتحلت فقال لها اربعي على نفسك أو نحو هذا لعلك تريدين النكاح إنها أربعة أشهر وعشر من وفاة زوجك قالت فأتيت النبي ﷺ فذكرت له ما قال أبو السنابل بن بعكك فقال لها النبي ﷺ قد حللت حين وضعت حملك