It is narrated from Hazrat Anas (may Allah be pleased with him) that once the Prophet (peace and blessings be upon him) saw some spittle on the direction of the qiblah in the mosque. This thing was so hard on the Prophet (peace and blessings be upon him) that signs of displeasure became evident on his blessed face. The Prophet (peace and blessings be upon him) cleaned it and said that when a person stands for prayer, he is conversing with his Lord, so he should spit to his left side or under his foot, and he indicated in such a way that he should take it in his cloth and rub it.