الكافي- ط الاسلامية, volume 3, page 420

2. Ali ibn Ibrahim has narrated from Muhammad ibn ‘Isa from Yunus ibn ‘Abd al-Rahman from ‘Abd Allah ibn Sinan who has said the following: “Abu ‘Abd Allah (a.s.), has said, ‘On Friday when it is Zawal (declining of the sun to ward the west at noontime), then you can begin the obligatory Salah (prayer).”’

Translation: Muhammad Sarwar·Thaqalayn link·The Arabic above is the original.

3. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from al-Husayn ibn Sa‘id from al-Nadr ibn Suwayd from Muhammad ibn abu Hamzah from Sufyan ibn al-Simt who has said the following: “I once asked abu ‘Abd Allah (a.s.), about the time of al-‘Asr Salah (prayer) on Friday. He (the Imam) said, ‘It is at the time of al-Dhuhr Salah (prayer) during the days other than Fridays.’”

Translation: Muhammad Sarwar·Thaqalayn link·The Arabic above is the original.

4. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from Muhammad ibn Khalid from al-al-Qasim ibn ‘Urwah from Muhammad Ibn Abi ‘Umayr who has said the following: “I once asked abu ‘Abd Allah (a.s.), about Salah (prayer) of Friday. He (the Imam) said, ‘ Jibril brought it with a short period of time. When it is Zawal (declining of the sun toward the west at noontime) then perform it.’ I (the narrator) then asked, ‘When it is Zawal, must I perform two Rak‘at, then Friday Salah (prayer)?’ Abu ‘Abd Allah (a.s.), said, ‘I, however, when it is Zawal, do not begin anything before obligatory Salah (prayer).’ Al-Qasim has said that ibn Bukayr would perform two Rak‘at when he had doubts about the commencement of Zawal. When he became certain of the commencement of Zawal he commenced the obligatory Salah (prayer) on Friday.’” (The following chapter is best explained in the form of fatwa.)

Translation: Muhammad Sarwar·Thaqalayn link·The Arabic above is the original.