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
abudawud:4201 – Ibn Nufayl > Zuhayr > ʿAbd al-Malik b. Abū Sulaymān And Qaraʾah ʿAbd al-Malik > Abū al-Zubayr Warawāh Abū al-Zubayr > Jābir

We used to grow beard long except during the Hajj or 'Umrah. Abu Dawud said: Istihdad means to shave the pubes.  

أبو داود:٤٢٠١ – حَدَّثَنَا ابْنُ نُفَيْلٍ حَدَّثَنَا زُهَيْرٌ قَرَأْتُ عَلَى عَبْدِ الْمَلِكِ بْنِ أَبِي سُلَيْمَانَ وَقَرَأَهُ عَبْدُ الْمَلِكِ عَلَى أَبِي الزُّبَيْرِ وَرَوَاهُ أَبُو الزُّبَيْرِ عَنْ جَابِرٍ قَالَ

كُنَّا نُعْفِي السِّبَالَ إِلاَّ فِي حَجٍّ أَوْ عُمْرَةٍ  

قَالَ أَبُو دَاوُدَ الاِسْتِحْدَادُ حَلْقُ الْعَانَةِ