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.
ahmad:13948Yazīd b. Hārūn > Shuʿbah > Qatādah > Anas

[Machine] "On the authority of the Prophet ﷺ, my father narrated to me that Al-Dhahhak, meaning the son of Makhlad, said: Shu'bah informed us on the authority of Qatadah, who reported from Anas, who narrated from the Prophet ﷺ. And my father also narrated to me that Muhammad ibn Yazid Al-Wasiti reported to us on the authority of Hisham Al-Dastuway, and Shu'bah collectively reported from Qatadah, who reported from Anas ibn Malik, who narrated from the Prophet ﷺ. The Prophet ﷺ said: Spitting in the mosque is a sin, and the expiation for it is burying it."  

أحمد:١٣٩٤٨حَدَّثَنَا يَزِيدُ بْنُ هَارُونَ أَخْبَرَنَا شُعْبَةُ عَنْ قَتَادَةَ عَنْ أَنَسٍ

عَنِ النَّبِيِّ ﷺ قَالَ أَبِي وحَدَّثَنِي الضَّحَّاكُ يَعْنِي ابْنَ مَخْلَدٍ قَالَ أَخْبَرَنَا شُعْبَةُ عَنْ قَتَادَةَ عَنْ أَنَسٍ عَنِ النَّبِيِّ ﷺ وحَدَّثَنِي أَبِي حَدَّثَنَا مُحَمَّدُ بْنُ يَزِيدَ الْوَاسِطِيُّ عَنْ هِشَامٍ الدَّسْتُوَائِيِّ وَشُعْبَةَ جَمِيعًا عَنْ قَتَادَةَ عَنْ أَنَسِ بْنِ مَالِكٍ عَنِ النَّبِيِّ ﷺ قَالَ الْبُزَاقُ وَقَالَ يَزِيدُ وَالضَّحَّاكُ بْنُ مَخْلَدٍ فِي حَدِيثِهِمَا النُّخَاعَةُ فِي الْمَسْجِدِ خَطِيئَةٌ وَكَفَّارَتُهَا دَفْنُهَا