Here in Morocco the Imāms of the Masjids only perform one Salām in the prayer, this is the case with the majority of the Masjids, if not all.
So do those attending the congregation follow the Imām in only performing one?
There is no authentic hadith, on performing a single Salām narrated from the Prophet ﷺ, as mentioned by a number of the Hufādh, from them:
➖Ibn Al-Qayyim and other than them.
So it’s most appropriate to perform two Salāms.
And if one was to shorten it to only a single salām; then it would suffice.
This action has been authentically narrated from more than one of the companion, from them:
➖Anas – with Ibn Al-Mundhir in “Al-Awsat” (1499) and Ibn Abi Shaybah (3065).
➖Ibn ‘Umar – with ‘Abdurrazāq (3142).
➖Āaisha – with Ibn Khuzayma (730) and other than him.
Nawawi and Ibn Rajab and Ibn Al-Mundhir relayed an unanimous agreement upon the permissibility of performing a single Salām.
Look in “Al-Fath” of Ibn Rajab (5th volume)
And Allah knows best.
Shaykh Abu Hatim Yusuf Al-‘Inaabi Al-Jazaa’iree – may Allah preserve him.
29th, Muharram, 1438H.
Abu ‘Abdirrahman ‘Abdullaah bin Ahmed Ash-Shingaani.