Nowadays; however, people could easily hear the ’Ath?n recited through loud speakers wherever they are and hence the non existence of the need for the second ’Ath?n which ‘Uthm?n ( - رضي الله عنه -) ordered to be called.
Accordingly, calling a second ’Ath?n is impermissible for adding a new act in Sahr?‘ah with no need is impermissible. And this very thing induced ‘Al? ( - رضي الله عنه -) to omit this second ’Ath?n and revert to the prophet’s ( - ) Sunnah -as Al-Qurtub? mentioned in his “Tafs?r”. (1)
To conclude, I believe that the Sunnah ’Ath?n -i.e. one ’Ath?n- is sufficient and should be called when the Im?m ascends the pulpit and there is no need for a second ’Ath?n. Following the Sunnah is much more better. (2)
According to the previous discussion and since the ’Ath?n used to be called outside the mosque during ‘Uthm?n’s ( - رضي الله عنه -) era and Hish?m Ibn Abdil Malik was the first to order that it be called inside a minaret then inside the mosque after a period of time, then all the caliphs after him followed his foot steps till this day -as Ash-Sh?tib? and others (3) stated- it becomes clear to you that there is no pre Jumu‘ah Sunnah Sal?t. Had the Sah?bah ( - ) performed such a Sal?t, it would have been transmitted to us.
It may be raised that the prophet ( - ) ordered the man -who entered the mosque while he ( - ) was delivering his speech- to perform the two Rak‘ah Sal?t [before sitting].
The answer is that these tow Rak‘ahs are “Tahiyyatul Masjid” which the man had not performed and hence the prophet’s ( - ) order him to do them. (4)
(1) “Al-J?m?‘ Li Ahk?mil Qur’?n” (vol. 18 / p. 100).
(2) “Al-Ajwhiban N?fi‘ah” (pp. 10 - 11).
(3) See: “Al-I‘tis?am” (vol. 2 / pp. 146 - 7) and “Al-Ajwhiban N?fi‘ah” (pp. 14 - 5).
(4) The narrators of this had?th will follow soon.