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
darimi:154 – al-Ḥusayn b. Manṣūr > al-Ḥusayn b. al-Walīd > Wuhayb > Hishām > Muḥammad b. Sīrīn

[Machine] It means: "He used to not give a fatwa (religious ruling) regarding matters related to the private area in which there is disagreement."  

الدارمي:١٥٤ – أَخْبَرَنَا الْحُسَيْنُ بْنُ مَنْصُورٍ حَدَّثَنَا الْحُسَيْنُ بْنُ الْوَلِيدِ عَنْ وُهَيْبٍ عَنْ هِشَامٍ عَنْ مُحَمَّدِ بْنِ سِيرِينَ

أَنَّهُ كَانَ «لَا يُفْتِي فِي الْفَرْجِ بِشَيْءٍ فِيهِ اخْتِلَافٌ»