Why didn’t the most prominent scholars ever speak about Jamaat-ul-Muslimeen?

This question is often asked by various critics, we will try to answer this question according to the knowledge given to us by Allah, InshAllah.

‘Follow that which has been revealed upon you from Allah and do not follow any other friends besides it. Little do you recollect!’
[Surah Al-Araf: Ayah 3]

Our beloved Prophet Muhammad said (SallAllah-u-Alaihi-wa-Sallam): O people for sure, I am leaving among you these (two things), if you hold them firmly you would never go astray. Those two things are Allah’s book and the tradition way of his prophet.
[Mustadrak Hakim, Sanad: Hassan]

It should be clear that when Jamaat-ul-Muslimeen is proven from Prophet Muhammad [SallAllah-u-Alaihi-wa-Sallam] ‘s time then there is no need for giving proof for Jamaat-ul-Muslimeen in any scholar’s time, still for the argument s’ sake we are giving proof from some scholar s’ books.

Imam Abu Hanifa (rehmatullah) said: when a person dies who has no inheritor his belongings should be for Jamaat-ul-Muslimeen…
[Alhidaya, kitab ul Alseer, page 603]

Imam Abu Hanifa (Rehmatullah) said : Taking of qasaas without hard work and power isn’t possible and hard work with out Jamaat-ul-Muslimeen and Jamaat-ul-Muslimeen‘s Imam isn’t possible.
[Alhidaya, page 585, kitab ul alseer]

Imam Jaffer Sadiq (rehmatullah) says : Whoever disputes in Jamaat-ul-Muslimeen and breaks the Imam ‘s oath, he will appear with shame in front of Allah.
[Asool Kafi, Baab 102]

Imam Jaffer Sadiq (rehmatullah) says : Whoever parts from Jamaat-ul-Muslimeen even the size of palm, he removes the rope if Islam from his neck.
[Asool Kafi, Volume 1, Baab 102]

Imam Shafai (rehmatullah) says :  …whoever should say what Jamaat-ul-Muslimeen says without dispute……….. all of Jamaat-ul-Muslimeen can’t be unaware of Kitab Allah, Sunnah prophet (SallAllah-u-Alaihi-wa-Sallam)…
[Hiyat e Imam Temimia-asar-minhaj-compiled by professor Abu Zehra (Egypt) translated by Hussein Naqvi [Urdu], page 650]

Sheikh Abdul Qadir Jilani (rehmatullah) says : Prophet Muhammad (SallAllah-u-Alaihi-wa-Sallam) said: The heart of a true believer doesn’t deceive in three things 1) performing good deeds for Allah alone, b) Advising the Ameer, c) adhering to Jamaat-ul-Muslimeen.
[Ghani tul tabeen, page 506]

Shah Waliullah says (rehmatullah) : I say it should be clear that in the month of Ramadan blessing is for Jamaat-ul-Muslimeen.
[Huzatul albaqta translated, page 162]

Ibn e Hajar (rehmatullah) says : Jamaat means Jamaat-ul-Muslimeen.
[Fath ul Bari, 221/5]

Imam Qartbi (rehmatullah) says: The definition of a person who leaves Jamaat is that he left the Deen as whoever leaves Jamaat-ul-Muslimeen becoming a apostate, only if he returns to Jamaat-ul-Muslimeen whoever had left
[Fat ul Bari, 222/15]

Imam Khitabi (rehmatullah) says : And Jamaat-ul-Muslimeen is the best.
[Abu Yahla,478/2]

Abu Usman Al Nehdi (rehmatullah) says: wish well for Jamaat-ul-Muslimeen.
[Shab ul Iman, 26/6]

Al Rabi bin Khaishem (rehmatullah) says : …That he should be well wisher of Jamaat-ul-Muslimeen.
[Behqi, 287/6 : Sanad : Sahih]

Imam Makhool (rehmatullah) says that Prophet Muhammad (SallAllah-u-Alaihi-wa-Sallam) said: Whoever leaves Jamaat-ul-Muslimeen, he has no salat until he returns to them.
[Saeed bin Mansoor, Sanad :Hassan Mursil]

Lengthy lists can be compiled to give proof for Jamaat-ul-Muslimeen but critics will criticize for the sake of it, but they should remember this hadith.

Prophet Muhammad (SallAllah-u-Alaihi-wa-Sallam) said: Whoever opposes Jamaat-ul-Muslimeen even the size of a palm, removes the chain of Islam from his neck.
[Mustadrak Hakim, 1/117, Sanad: Sahih]