´It is narrated from Abu Hurairah and Abu Sa'eed Al-Khudri that:` The Messenger of Allah saw some sputum on the wall of the mosque. He picked up a stone and scraped it off, then he said, "If anyone of you needs to spit, he should not spit in fro not of him or to his right; let him spit to his right; let him spit to his left or under his left foot."
Hadith Referenceسنن ابن ماجه / كتاب المساجد والجماعات / 761
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:صحيح مسلم
´It was narrated from Anas that:` The Prophet saw some sputum in the prayer direction of the mosque and he became so angry that his face turned red. Then a woman from among the Ansar came and scraped it off, and put some Khaluq on that spot. The Messenger of Allah said: "How good this is."
Hadith Referenceسنن ابن ماجه / كتاب المساجد والجماعات / 762
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:إسناده صحيح
´It was narrated that 'Abdullah bin 'Umar said:` "The Messenger of Allah saw some sputum in the prayer direction of the mosque, when he was praying in front of the people. He scratched it off, then when the prayer was over, he said: 'When anyone of you is performing prayer, Allah is before him, so none of you should spit toward the front while praying.'"
Hadith Referenceسنن ابن ماجه / كتاب المساجد والجماعات / 763
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:بخاري ومسلم