Sayyiduna Abdullah bin Umar (may Allah be pleased with them) narrated that the Messenger of Allah (peace and blessings be upon him) saw phlegm on the wall of the Qiblah, so he scraped it off, and addressing the people, he said: When any person is in prayer, he should not spit in front of him, because during prayer, Allah Almighty is before his face.
Hadith Referenceاللؤلؤ والمرجان / كتاب المساجد ومواضع الصلاة / 319
Hadith Gradingمحدثین:«صحیح»
Hadith Takhrij«صحیح، أخرجه البخاري في: 8 كتاب الصلاة: 33 باب حكّ البزاق باليد من المسجد»