Hadith.644 - It was narrated by Al-Hussain ibn Abi al-Ala' from Imam Jafar ibn Muhammad Al-Sadiq that He said: "When Adam was sent down from Paradise, a black mark appeared on his face from his head to his feet. His sorrow and weeping over what had befallen him continued for a long time. Archangel Jibril came to him and said: 'O’ Adam, what makes you weep?' He said: 'This mark that has appeared on me.' Archangel Jibril said: 'Stand up, O’ Adam, and pray, for this is the time of the first prayer.' Adam stood and prayed, and the mark receded to his neck. Archangel Jibril came to him at the time of the second prayer and said: 'Stand and pray, O’ Adam, for this is the time of the second prayer.' Adam stood and prayed, and the mark receded to his navel. Archangel Jibril came again for the third prayer and said: 'O’ Adam, stand and pray, for this is the time of the third prayer.' Adam stood and prayed, and the mark receded to his knees. Archangel Jibril then came for the fourth prayer and said: 'O’ Adam, stand and pray, for this is the time of the fourth prayer.' Adam stood and prayed, and the mark receded to his feet. Archangel Jibril finally came for the fifth prayer and said: 'O’ Adam, stand and pray, for this is the time of the fifth prayer.' Adam stood and prayed, and the mark disappeared. Adam praised and thanked Allah (swt), and Archangel Jibril said: 'O’ Adam, the example of your descendants in these prayers is like your example with this mark. Whoever among your descendants prays the five daily prayers, his sins will be removed just as this mark was removed from you.'"