Ibn L As Khuza'i, may Allah have mercy on him, says that once Hazrat Ammar, may Allah be pleased with him, entered the mosque and performed two light but complete rak'ahs, then sat down. We also got up, went to him, and sat down. We said to him, "Abu al-Yaqzan! You performed these two rak'ahs very lightly." He replied, "I have outpaced Satan in them, so that he may not enter within me." Then he mentioned the complete hadith.