Performing Optional Salah (Prayer) at the Time of Obligatory Salah (Prayer) and the Times Not to Perform Salah (Prayer)

2. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from ibn Faddal Yunus ibn Ya‘qub from Minhal who has said the following: “I once asked abu ‘Abd Allah عليه السلام, about the time when I should not perform any optional Salah (prayer) after the sun declines toward the west at noontime. He (the Imam) replied, ‘When it is one yard until it is like it (twice as much).”’