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.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
bayhaqi:15408 – Abū Bakr b. al-Ḥārith > ʿAlī b. ʿUmar > al-Ḥusayn b. Ismāʿīl > Abū Ibrāhīm al-Zāhidī > al-Nufaylī > Maʿqil b. ʿUbaydullāh > ʿAṭāʾ b. Abū Rabāḥ > Adná And Qt al-Ḥayḍ Yawm

[Machine] Abu Ibrahim used to narrate these two hadiths. The Imam, the pious one, Imam Ahmad ibn Hanbal, may Allah exalt his mention, used to go to them.  

البيهقي:١٥٤٠٨ – وَأَخْبَرَنَا أَبُو بَكْرِ بْنُ الْحَارِثِ أنا عَلِيُّ بْنُ عُمَرَ نا الْحُسَيْنُ بْنُ إِسْمَاعِيلَ نا أَبُو إِبْرَاهِيمَ الزَّاهِدِيُّ نا النُّفَيْلِيُّ قَالَ قَرَأْتُ عَلَى مَعْقِلِ بْنِ عُبَيْدِ اللهِ عَنْ عَطَاءِ بْنِ أَبِي رَبَاحٍ قَالَ أَدْنَى وَقْتِ الْحَيْضِ يَوْمٌ قَالَ

أَبُو إِبْرَاهِيمَ إِلَى هَذَيْنِ الْحَدِيثَيْنِ كَانَ يَذْهَبُ الْإِمَامُ الْوَرِعُ الْإِمَامُ أَحْمَدُ بْنُ حَنْبَلٍ رَحِمَهُ اللهُ تَعَالَى