Finality of the Holy Prophet (SAWA) in view of Shia divine leaders (AS):-

Imam Ali (AS):-

Holy Prophet is the warner and a guide. He is the messenger of Allah for men and jinn till the day of judgement. Neither any prophet nor any messenger would be there after him, nor any book would be revealed after Holy Quran.

Kitaab e Salaam Pg 884.

Imam Jafar Sadiq (AS) said:-

Almighty Allah has put an end to all the divine books with the revelation of Holy Quran and after it no book would be revealed. Almighty Allah has made lawful and unlawful many things in this last books and it’s lawful and unlawful would be forever till the day of resurrection.
Biharul Anwar Vol 47 pg 35

A man asked Imam Jafar Sadiq (AS):- Why is that Quran remain fresh even though it is being recited many times.

Imam(as) said: – This is because Allah has not revealed Quran for a specific person or for a specific time and because of this it looks new and fresh for every nation till the day of judgement.
Oyun e Akhbar e Reza(as) Vol 2 pg 87

Biharul Anwar Vol 17 Pg 213…

Imam Reza (AS):-

The passage of time does not make the Quran obsolete and reading it frequently does not make it ineffective because it was not revealed for a specific time. Rather it is a proof and guide for the people of all ages.

Oyun e Akhbar e Reza Vol 2 pg 130.

Biharul Anwar Vol 17 pg 210.

Imam Ali(AS):-

Holy Prophet is the warner and a guide. He is the messenger of Allah for men and jinn till the day of Qayamat. Neither any prophet nor any messenger would be there after him nor any book would be revealed after Holy Quran.

Kitaab e Saleem Pg 884.

So, according to shia divine leaders, neither any prophet nor any messenger is going to come after Holy Prophet(sawa) and no new book would come after the Holy Quran.