Is what is mentioned on the aforementioned website regarding the virtues of the Surahs authentic, and does reciting Surahs Ar-Rahman, Al-Waqi'ah, and Al-Hadid consecutively guarantee a place in Jannah Al-Firdaws, and where can I find a reliable source for the virtues of the Surahs of the Quran?

After reviewing the aforementioned website, it became clear that it is replete with fabrications against Allah and His Messenger, by mentioning fabricated virtues for the Surahs of the Quran. Among these fabrications are: the assurance that whoever recites Surat An-Nisa every Friday will be safe from the compression of the grave, and the reward for reciting Surat Al-Ma'idah is equivalent to ten times the number of living Jews and Christians, and other falsehoods.

The statement that reciting Ar-Rahman, Al-Waqi'ah, and Al-Hadid, in succession, guarantees a place in Jannah Al-Firdaws, has no evidence and is a lie against Allah and His Messenger. The Ahadith mentioned regarding the virtues of these Surahs are weak or fabricated.

The Imams have compiled works on the virtues of the Quran, which include both authentic and weak narrations. Among the most authentic of these are "Fada'il al-Quran" by Ibn Kathir, "As-Sahih wa As-Saqim fi Fada'il al-Quran al-Kareem" by Jam'iyyat al-Hadith ash-Sharif, "As-Sahih al-Musnad min Fada'il as-Suwar" by Hassan ibn Abd al-Rahim, and "Sahih Fada'il al-Quran" by Muayyad Abd al-Fattah Hamdan.