It is narrated from Hazrat Salman Farsi (may Allah be pleased with him) that once some polytheists mocked the Holy Prophet (peace and blessings be upon him) saying, "We see that your Prophet even teaches you the manner of relieving yourselves." Hazrat Salman Farsi (may Allah be pleased with him) replied, "Yes! He commands us that we should not face the Qiblah at that time, should not clean ourselves with the right hand, and should not suffice with less than three stones, nor with dung or bone."