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
tabarani:7960 – ʿAllān b. ʿAbd al-Ṣamad Māghmah > ʿUmar b. Muḥammad b. al-Ḥasan from my father > Ibrāhīm b. Ṭahmān > Jaʿfar b. al-Zubayr > al-Qāsim > Abū Umāmah

[Machine] On the authority of the Prophet Muhammad ﷺ who said, "Whoever spits in the direction of his qibla (the direction of prayer) and does not bury it, it will come on the Day of Judgment as a snake until it falls between his eyes."  

الطبراني:٧٩٦٠ – حَدَّثَنَا عَلَّانُ بْنُ عَبْدِ الصَّمَدِ مَاغمَةُ ثنا عُمَرُ بْنُ مُحَمَّدِ بْنِ الْحَسَنِ ثنا أَبِي ثنا إِبْرَاهِيمُ بْنُ طَهْمَانَ عَنْ جَعْفَرِ بْنِ الزُّبَيْرِ عَنِ الْقَاسِمِ عَنْ أَبِي أُمَامَةَ

عَنِ النَّبِيِّ ﷺ قَالَ «مَنْ بَزَقَ فِي قِبْلَتِهِ وَلَمْ يُوَارِهَا جَاءَتْ يَوْمَ الْقِيَامَةِ أَحْمَامًا تَكُونُ حَتَّى تَقَعَ بَيْنَ عَيْنَيْهِ»  

See similar narrations below:

Collected by Suyūṭī
suyuti:20976a –
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السيوطي:٢٠٩٧٦a –

"مَنْ بَزَقَ في قِبْلَتهِ وَلَمْ يُوَارِهَا، جَاءَتْ يَوْمَ القِيَامَةِ أَحْمَى مَا تَكُونُ حَتَّى تَقَعَ بين عَينَيهِ".  

[طب] الطبرانى في الكبير عن أَبي أُمامة