Shaikh Al-Albani rahimahullah said:

“For the Muhammadi adhaan [that is the adhan of the Prophet sallahu alayhi wa salam] is two times:

  • the first directly after the zawaal [midday when the sun is in the middle of the sky] and when the khateeb mounts [ie. the mimbar]
  • and the other before the zawaal when the Khateeb mounts also

and this is the mathhab of Ahmad ibn hanbal rahimahullah and others. As for the first, then its evidence is what preceded in the hadith of

as-Saaib radiallahu anhu that the first adhan used to be when the he used to sit on the mimbar and when the Salah was called

[reported by Bukhari and Abu dawood and others]

On the authority of Sa’d al-Qardh the Muadhin of the Prophet sallahu alayhi wa salam that he used to call the adhan on the day of jum’ah in the time of Messenger of Allah
salahu alayhi wa salam if the shade was equal to the strap of a sandal

[reported by Ibn Majah and al-Haakim].

Hafdih ibn Hajar mentioned in an-Nasai that the Imam emerges after the sixth hour [of jum’ah] and it is the beginning of the zawaal.

As for the other time there are ahaadith about it:

On the authority of Salamah ibn Akwaa’ radiallahu anhu who said: We used pray jum’ah with the Messenger of Allah sallahu alayhi wa salam when the sun passed the zawaal, then we would return and we would follow the shade

[reported by Bukhari and Muslim and Ibn Abi shaybah in the Musannaf]

On the authority of Anas: that the Messenger of Allah sallahu alayhi wa salam used to pray jum’ah when the sun declined

[reported by Bukhari and others]

On the authority of Jabir radiallahu anhu: The Messenger of Allah sallahu alayhi wa salam used to pray jum’ah if the sun declined

[reported by Tabaraani in awsat with a hasan chain]

… and what witnesses for that [the [permissibility of offering Jumu’ah early] are narrations from the action of the sahabah . We will mention some of it as citation for it:

On the authority of Abdullah ibn Siydaan as-Sulami who said: I witnessed the Jum’ah with Abu Bakr as-Sideeq so his khutbah and salah were before half of the day, then we witnessed with Umar so his khutbah and Salah was until I said: it is midday, then we witnessed with Uthman so his Khutbah and Salah was until I said: the day declined [ie. midday] so I did not see anyone criticize that and detest it.

[reported by ibn aby shaybah and Daraqutni]

I say [Albani]: and its chain is acceptable to be hasan, rather it is hasan according to some scholars like Ibn rajab and others for verily its narrators are trustworthy  besides Abdullah ibn Siydaan. Hafdih said in al-Fath: He is a senior Tabiee except his truthfulness is not known…[then Shaikh Al-Albani proves he is trustworthy] until Shaikh Al Albani says:

and due to these ahadith and narrations, Imam Ahmad rahimahullah took the opinion of the permissibility of salahtul jum’ah before the zawaal as preceded and it is the truth as Shawkaani said and others. And a detail statement in this issue is not possible in this short time so return to the longer works like Nayl al-Awtaar and others”

[Taken from Ajwibah an-Naafi’ah ‘an asilatul lajnah masjid ul-Jaami’ah pgs. 20,21, 25]

Translated by

Faisal Ibn Abdul Qaadir Ibn Hassan
Abu Sulaymaan