Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
bayhaqi:15583al-Shaykh And Rawāh Abū Maʿbad Ḥafṣ b. Ghaylān > Sulaymān b. Mūsá Biʾisnādih > ʿAmr b. al-ʿĀṣ

[Machine] The waiting period of a woman after the death of her husband is four months and ten days, and if she is divorced, her waiting period is three menstrual cycles. Abu Abdur-Rahman As-Sulami and Abu Bakr bin Al-Harith have informed us about this. They said: I am Ali bin Umar Al-Hafidh, narrated by Muhammad bin Al-Hasan bin Ali Al-Yaqtini, narrated by Al-Husain bin Abdullah bin Yazid Al-Qattan, narrated by Abbas bin Al-Walid Al-Khallal Ad-Dimashqi, narrated by Zaid bin Yahya bin Ubaid, narrated by Abu Ma'bad. He mentioned it and said: Ali is the one speaking and he is correct, and it is a Mursal (a narration in which the Companion is skipped) because Qabisa did not hear it from Amr.  

البيهقي:١٥٥٨٣قَالَ الشَّيْخُ وَرَوَاهُ أَبُو مَعْبَدٍ حَفْصُ بْنُ غَيْلَانَ عَنْ سُلَيْمَانَ بْنِ مُوسَى بِإِسْنَادِهِ إِلَى عَمْرِو بْنِ الْعَاصِ قَالَ

عِدَّةُ أُمِّ الْوَلَدِ إِذَا تُوُفِّيَ عَنْهَا سَيِّدُهَا أَرْبَعَةُ أَشْهُرٍ وَعَشْرًا وَإِذَا أُعْتِقَتْ فَعِدَّتُهَا ثَلَاثُ حِيَضٍ أَخْبَرَنَاهُ أَبُو عَبْدِ الرَّحْمَنِ السُّلَمِيُّ وَأَبُو بَكْرِ بْنُ الْحَارِثِ قَالَا أنا عَلِيُّ بْنُ عُمَرَ الْحَافِظُ نا مُحَمَّدُ بْنُ الْحَسَنِ بْنِ عَلِيٍّ الْيَقْطِينِيُّ نا الْحُسَيْنُ بْنُ عَبْدِ اللهِ بْنِ يَزِيدَ الْقَطَّانُ نا عَبَّاسُ بْنُ الْوَلِيدِ الْخَلَّالُ الدِّمَشْقِيُّ نا زَيْدُ بْنُ يَحْيَى بْنِ عُبَيْدٍ نا أَبُو مَعْبَدٍ فَذَكَرَهُ قَالَ عَلِيٌّ مَوْقُوفٌ وَهُوَ الصَّوَابُ وَهُوَ مُرْسَلٌ لِأَنَّ قَبِيصَةَ لَمْ يَسْمَعْ مِنْ عَمْرٍو