8. Ali ibn Muhammad has narrated from Sahl ibn Ziyad from Muhammad ibn al-Hassan from ‘Abd Allah ibn ‘Abd al-Rahman from Misma’ ibn ‘Abd Malik who has said the following: “He (the Imam) عليه السلام, has said, ‘When you complete al-Dhuhr Salah (prayer), it is time for al- ‘Asr Salah (prayer) except that before it there is Nafl (optional Salah (prayer) and it is up to you to make it lengthy or a short one.’”