Jika sedang shalat, janganlah sekali-kali meludah di depan atau di sebelah kanannya, namun hendaklah ia meludah di sebelah kiri atau di bawah kakinya
Imam Ahmad : 5983حَدَّثَنَا مُحَمَّدُ بْنُ عَبْدِ الرَّحْمَنِ حَدَّثَنَا أَيُّوبُ عَنْ نَافِعٍ عَنِ ابْنِ عُمَرَ أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ أَبْصَرَ نُخَامَةً فِي قِبْلَةِ الْمَسْجِدِ فَحَتَّهَا بِيَدِهِ ثُمَّ أَقْبَلَ عَلَى النَّاسِ فَتَغَيَّظَ عَلَيْهِمْ ثُمَّ قَالَ إِنَّ اللَّهَ تَعَالَى تِلْقَاءَ وَجْهِ أَحَدِكُمْ فِي صَلَاتِهِ فَلَا يَتَنَخَّمَنَّ أَحَدُكُمْ قِبَلَ وَجْهِهِ فِي صَلَاتِهِ
Narrated to us [Muhammad bin Abdirrahman] Narrated to us [Ayub] from [Nafi'] from [Ibn Umar], Rasulullah sallallaahu'alaihi wasallam saw phlegm in front of the direction of the mosque's Qibla. So he wiped it with his hand, then he faced the companions with an angry attitude and said: "Allah Ta'ala faces your faces when praying. So don't ever let any of you get phlegm in front of his face when performing prayer.
Hadith Corroboration :
Imam Ahmad : 4280, 4609, 4905, 5083, 5151, 5983, 7098, 8998, 11125, 11410, 11620, 12968, 13384, 14723
Imam Bukhari : 390, 391, 393, 394, 395, 396, 397, 399, 400, 711, 1137, 1138, 5646
Imam Muslim : 852, 855, 856
Imam Nasa'i : 716
Imam Ibnu Majah : 755, 1012
Imam Malik : 409
Imam Darimi : 1362