Abdullah b. Shakhkhir reported on the authority of his father that he said: I said prayer with the Messenger of Allah (may peace be upon him) and saw him spitting and rubbing it off with his shoe.
Hadith In Arabic Text :
حدثنا عبيد الله بن معاذ العنبري، حدثنا أبي، حدثنا كهمس، عن يزيد بن عبد الله بن الشخير، عن أبيه، قال صليت مع رسول الله صلى الله عليه وسلم فرأيته تنخع فدلكها بنعله .
Chapter : The Book of Mosques and Places of Prayer – كتاب الْمَسَاجِدِ وَمَوَاضِعِ الصَّلاَةِ