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:8396Abū Ṭāhir al-Faqīh > Abū ʿUthmān al-Baṣrī > Muḥammad b. ʿAbd al-Wahhāb > Yaʿlá b. ʿUbayd > Sufyān > Abū Isḥāq > ʿAlī

[Machine] Ali said, "Do not fast in the month of Dhu al-Hijjah and do not observe fasting on Fridays, as I believe it to be unique. Also, do not perform the Tahajjud prayer while you are fasting." It has also been narrated from Al-Hasan that Ali disliked making up missed fasts during the first ten days of Dhu al-Hijjah. This is because he used to see the consecutive making up of fasts as two separate narrations. So, if what is obligatory upon a person to make up exceeds nine days, the consecutive making up is interrupted by the day of sacrifice and the days of Tashreeq.  

البيهقي:٨٣٩٦أَخْبَرَنَا أَبُو طَاهِرٍ الْفَقِيهُ أنبأ أَبُو عُثْمَانَ الْبَصْرِيُّ أنبأ مُحَمَّدُ بْنُ عَبْدِ الْوَهَّابِ أنبأ يَعْلَى بْنُ عُبَيْدٍ ثنا سُفْيَانُ عَنْ أَبِي إِسْحَاقَ قَالَ

قَالَ عَلِيٌّ ؓ لَا تَقْضِ رَمَضَانَ فِي ذِي الْحِجَّةِ وَلَا تَصُمْ يَوْمَ الْجُمُعَةِ أَظُنُّهُ مُنْفَرِدًا وَلَا تَحْتَجِمْ وَأَنْتَ صَائِمٌ وَرُوِيَ أَيْضًا عَنِ الْحَسَنِ عَنْ عَلِيٍّ ؓ فِي كَرَاهِيَةِ الْقَضَاءِ فِي الْعَشْرِ وَهَذَا لِأَنَّهُ كَانَ يَرَى قَضَاءَهُ فِي إِحْدَى الرِّوَايَتَيْنِ عَنْهُ مُتَتَابِعًا فَإِذَا زَادَ مَا وَجَبَ عَلَيْهِ قَضَاؤُهُ عَلَى تِسْعَةِ أَيَّامٍ انْقَطَعَ تَتَابُعُهُ بِيَوْمِ النَّحْرِ وَأَيَّامِ التَّشْرِيقِ