Arabic : Book 14, Hadith 461
Malik Muwatta: Hadith 465
14. The Qibla
موطأ مالك
465
Malik Muwattaحَدَّثَنِي يَحْيَى، عَنْ مَالِكٍ، عَنْ نَافِعٍ، عَنْ عَبْدِ اللَّهِ بْنِ عُمَرَ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم رَأَى بُصَاقًا فِي جِدَارِ الْقِبْلَةِ فَحَكَّهُ ثُمَّ أَقْبَلَ عَلَى النَّاسِ فَقَالَ إِذَا كَانَ أَحَدُكُمْ يُصَلِّي فَلاَ يَبْصُقْ قِبَلَ وَجْهِهِ فَإِنَّ اللَّهَ تَبَارَكَ وَتَعَالَى قِبَلَ وَجْهِهِ إِذَا صَلَّى "
Yahya related to me from Malik from Nafi from Abdullah ibn Umar that the Messenger of Allah (ﷺ) saw spittle on the wall of the qibla and scraped it off. Then he went up to the people and said, "Do not spit in front of you when you are praying, because Allah, the Blessed and Exalted, is in front of you when you pray."
Reference: USC-MSA web (English) : Book 14, Hadith 4
Arabic : Book 14, Hadith 461
Arabic : Book 14, Hadith 461