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:478 – Hannād b. al-Sarī > Abū al-Aḥwaṣ > Manṣūr > Ribʿī > Ṭāriq b. ʿAbdullāh al-Muḥāribī

The Messenger of Allah ﷺ said: When a man stands with the intention of saying prayer, or if any of you says prayer, he should not spit before him, nor at his right side; but he should do so at his left side, if there is a place for it; or he should spit under his left foot and then rub it off.  

أبو داود:٤٧٨ – حَدَّثَنَا هَنَّادُ بْنُ السَّرِيِّ عَنْ أَبِي الأَحْوَصِ عَنْ مَنْصُورٍ عَنْ رِبْعِيٍّ عَنْ طَارِقِ بْنِ عَبْدِ اللَّهِ الْمُحَارِبِيِّ قَالَ

قَالَ رَسُولُ اللَّهِ ﷺ إِذَا قَامَ الرَّجُلُ إِلَى الصَّلاَةِ أَوْ إِذَا صَلَّى أَحَدُكُمْ فَلاَ يَبْزُقْ أَمَامَهُ وَلاَ عَنْ يَمِينِهِ وَلَكِنْ عَنْ تِلْقَاءِ يَسَارِهِ إِنْ كَانَ فَارِغًا أَوْ تَحْتَ قَدَمِهِ الْيُسْرَى ثُمَّ لْيَقُلْ بِهِ  

See similar narrations below:

Collected by Ṭabarānī, Suyūṭī
tabarani:8168 – al-Ḥusayn b. Isḥāq al-Tustarī > Yaḥyá al-Ḥimmānī > Qays b. al-Rabīʿ And ʾAbū al-Aḥwaṣ > Manṣūr > Ribʿī b. Ḥirāsh > Ṭāriq b. ʿAbdullāh

The Messenger of Allah ﷺ said: When a man stands with the intention of saying prayer, or if any of you says prayer, he should not spit before him, nor at his right side; but he should do so at his left side, if there is a place for it; or he should spit under his left foot and then rub it off. (Using translation from Abū Dāʾūd 478)   

الطبراني:٨١٦٨ – حَدَّثَنَا الْحُسَيْنُ بْنُ إِسْحَاقَ التُّسْتَرِيُّ ثنا يَحْيَى الْحِمَّانِيُّ ثنا قَيْسُ بْنُ الرَّبِيعِ وَأَبُو الْأَحْوَصِ عَنْ مَنْصُورٍ عَنْ رِبْعِيِّ بْنِ حِرَاشٍ عَنْ طَارِقِ بْنِ عَبْدِ اللهِ قَالَ

قَالَ رَسُولُ اللهِ ﷺ «إِذَا قَامَ أَحَدُكُمْ فِي الصَّلَاةِ فَلَا يَبْزُقَنَّ أَمَامَهُ وَلَا عَنْ يَمِينِهِ وَلَكِنْ عَنْ يَسَارِهِ إِنْ كَانَ فَارِغًا أَوْ تَحْتَ قَدَمِهِ الْيُسْرَى»  

suyuti:2087a –

"When any one of you prays, let him not spit in front of him or to his right, rather let him spit to his left or beneath his feet." Then the Prophet ﷺ spat like this on his garment and rubbed it. (Using translation from Nasāʾī 309)   

السيوطي:٢٠٨٧a –

"إذَا صلَّى إحدُكم فلا يَبزُقْ بين يديه، ولا عَنْ يمينِه، ولكنْ عن يسارهِ أوْ تحتَ قدَمِهِ".  

[ن] النسائي عن أبي هريرة