Ibn 'Umar was once told that Said bin Zaid bin 'Amr bin Nufail, one of the Badr warriors, had fallen ill on a Friday. Ibn 'Umar rode to him late in the forenoon. The time of the Friday prayer approached and Ibn 'Umar did not take part in the Friday prayer. Narrated Subaia bint Al-Harith: That she was married to Sad bin Khaula who was from the tribe of Bani 'Amr bin Luai, and was one of those who fought the Badr battle. He died while she wa pregnant during Hajjat-ul-Wada.' Soon after his death, she gave birth to a child. When she completed the term of deliver (i.e. became clean), she prepared herself for suitors. Abu As-Sanabil bin Bu'kak, a man from the tribe of Bani Abd-ud-Dal called on her and said to her, "What! I see you dressed up for the people to ask you in marriage. Do you want to marry By Allah, you are not allowed to marry unless four months and ten days have elapsed (after your husband's death)." Subai'a in her narration said, "When he (i.e. Abu As-Sanabil) said this to me. I put on my dress in the evening and went to Allah's Apostle and asked him about this problem. He gave the verdict that I was free to marry as I had already given birth to my child and ordered me to marry if I wished."
حَدَّثَنَا قُتَيْبَةُ، حَدَّثَنَا لَيْثٌ، عَنْ يَحْيَى، عَنْ نَافِعٍ، أَنَّ ابْنَ عُمَرَ ـ رضى الله عنهما ـ ذُكِرَ لَهُ أَنَّ سَعِيدَ بْنَ زَيْدِ بْنِ عَمْرِو بْنِ نُفَيْلٍ ـ وَكَانَ بَدْرِيًّا ـ مَرِضَ فِي يَوْمِ جُمُعَةٍ فَرَكِبَ إِلَيْهِ بَعْدَ أَنْ تَعَالَى النَّهَارُ وَاقْتَرَبَتِ الْجُمُعَةُ، وَتَرَكَ الْجُمُعَةَ
• Sahih al-Bukhari, 3991
• Sahih al-Bukhari, Vol. 5, Book of Military Expeditions led by the Prophet ﷺ (Maghaazi), Hadith 326
• Sahih al-Bukhari, Book of Military Expeditions led by the Prophet ﷺ (Maghaazi), Hadith 326