“I once said to abu al-Hassan al-Thaniy (a.s.), ‘In the market place I come to know that it is time but it becomes difficult (to perform Salah (prayer)) after I enter the market place (for business).’ He (the Imam) said, ‘Satan nears the sun during three conditions, at sunrise, Zawal (declining of the sun toward the west at noontime) and at sunset. You must perform Salah (prayer) after Zawal (declining of the sun toward the west at noontime); Satan wants to mislead you from the right path.’”