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.
abudawud:308Musaddad > Ismāʿīl > Ayyūb > Muḥammad b. Sīrīn

The name of Umm al-Hudhail is Hafsah daughter os Sirin. The name of her son was Hudhail and his husband 'Abd al-Rahman.  

أبو داود:٣٠٨حَدَّثَنَا مُسَدَّدٌ حَدَّثَنَا إِسْمَاعِيلُ أَخْبَرَنَا أَيُّوبُ عَنْ مُحَمَّدِ بْنِ سِيرِينَ عَنْ أُمِّ عَطِيَّةَ بِمِثْلِهِ
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قَالَ أَبُو دَاوُدَ أُمُّ الْهُذَيْلِ هِيَ حَفْصَةُ بِنْتُ سِيرِينَ كَانَ ابْنُهَا اسْمُهُ هُذَيْلٌ وَاسْمُ زَوْجِهَا عَبْدُ الرَّحْمَنِ