Al-Hasan ibn Muhammad from Salih ibn Khalid and ‘Ubays ibn Hisham from Thabit from Ziyad ibn Abi Ghiyath from Abu Abdillah عليه السلام, who said: I heard Imam عليه السلام say: “When the obligatory prayer is present, begin with it; it will not harm you if you leave the supererogatory prayer that comes before it.”