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.
nasai-kubra:3143Muḥammad b. ʿAbdullāh b. al-Mubārak > Isḥāq al-Azraq > Ayyūb > Qatādah > Abū Qilābah > Abū Asmāʾ > Shaddād b. Aws

[Machine] The Messenger of Allah ﷺ went out on the eighteenth of Ramadan and saw a man who was getting his head shaved. He said, "The one who shaves the head and the one who has their head shaved have broken their fast." Abu 'Abdur-Rahman Qatadah said, "We do not know if he heard something from Abu Qilabah or not."  

الكبرى للنسائي:٣١٤٣أَخْبَرَنَا مُحَمَّدُ بْنُ عَبْدِ اللهِ بْنِ الْمُبَارَكِ قَالَ حَدَّثَنَا إِسْحَاقُ الْأَزْرَقُ عَنْ أَيُّوبَ عَنْ قَتَادَةَ عَنْ أَبِي قِلَابَةَ عَنْ أَبِي أَسْمَاءَ عَنْ شَدَّادِ بْنِ أَوْسٍ قَالَ

خَرَجَ رَسُولُ اللهِ ﷺ فِي ثَمَانَ عَشْرَةَ مِنْ رَمَضَانَ فَأَبْصَرَ رَجُلًا يَحْتَجِمُ فَقَالَ «أَفْطَرَ الْحَاجِمُ وَالْمَحْجُومُ» قَالَ أَبُو عَبْدِ الرَّحْمَنِ قَتَادَةُ لَا نَعْلَمُهُ سَمِعَ مِنْ أَبِي قِلَابَةَ شَيْئًا