Prayers (Salat)

Bukhari :: Book 1 :: Volume 8 :: Hadith 401

Narrated 'Aisha:

(the mother of faithful believers) Allah's Apostle saw some nasal secretions, expectoration or sputum on the wall of the mosque in the direction of the Qibla and scraped it off.

Source materials are from the University of Southern California MSA site
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