Chapter on the Manner of Prayer, Its Description and What is Obligatory and Recommended

What was narrated by Ahmad ibn Muhammad from Ali ibn al-Hakam from Sayf ibn Umayrah from Abu Bakr from (Imam) Ja‘far ibn Muhammad عليه السلام, peace be upon him: Imam عليه السلام said: “When the time for an obligatory prayer enters, do not perform supererogatory prayers.”