Man Lā Yaḥḍuruh al-Faqīh

Hadith 852
prayer-etiquette
853 - وَقَالَ أَبُو جَعْفَرٍ عَلَيْهِ اَلسَّلاَمُ: «لاَ يَبْزُقَنَّ أَحَدُكُمْ فِي اَلصَّلاَةِ قِبَلَ وَجْهِهِ وَ لاَ عَنْ يَمِينِهِ وَ لْيَبْزُقْ عَنْ يَسَارِهِ وَ تَحْتِ قَدَمِهِ اَلْيُسْرَى.
Hadith.853 - Imam Muhammad ibn Ali Al-Baqir (as) said: "None of you should spit in front of themselves or to their right while praying. Instead, they should spit to their left or beneath their left foot."
Source: Shaykh Muḥammad b. ʿAlī al-Ṣaduq