Rejecting Bukhari & Muslim Makes You Disbelievers!

 Shuaib Al-Arna'ut:

If some of narrations are through the narrators of Al-Bukhari, and some from the narrators of Muslim, we have said: Its chain is authentic, its narrators are trustworthy, of the narrators of Saheeh's (i.e. Bukhari or Muslim), we have done that to make it clear that this chain is at the highest levels of authenticity, as the Ummah has called these two books as Sahihayn (i.e. the Two Sahih books) and are refering to the judgment of Shaikhayn (i.e. Al-Bukhari and Muslim) about authenticity. 

And whenever the Shaykhain or one of them (Al-Bukhari & Muslim) have taken hadeeth from a narrator, that narrator is beyond investigation, because when the Shaikhayn (Al-Bukhari & Muslim) or one of them accept narration from a narrator, it is same is deeming those narrator to be trustworthy explicitly.

Source: Musnad Ahmad ibn Hanbal. Vol. 1 , Pg. # 138.

Shah Waliullah Al-Dehlawi:

As about the two Saheeh's books (i.e. Al-Bukhari and Muslim), the scholars are in consensus that all of what is in those two books of the connected Marfu (i.e. connected chains up to the Prophet (saw)) is Saheeh (Authentic) with certainty, and the chains of those two books are Mutawatir (mass transmitted) up to their authors AND WHOEVER TRIVIALIZES THOSE TWO BOOKS IS AN INNOVATOR WHO IS FOLLOWING OTHER THAN THE PATH OF A BELIEVER (NOT A MUSLIM).

Source: Hujjatullahil Baligha. Vol. 1, Pg. # 232.