What is the authenticity of the Hadith: "Whoever prays on Saturday night four rak'ahs, reading in each rak'ah Surat Al-Fatihah once, and 'Qul Huwa Allahu Ahad' (Surat Al-Ikhlas) twenty-five times, Allah will forbid his body from the Hellfire"?

The aforementioned Hadith is fabricated (Mawdu'), as mentioned by Ash-Shawkani in "Al-Fawa'id Al-Majmu'ah fi Al-Ahadith Al-Mawdu'ah," and its narrators range from unknown to abandoned (Matruk). Night prayer (Qiyam al-Layl) is commendable on all days. Allah has encouraged it in His saying: "Their sides forsake their beds, to call upon their Lord in fear and aspiration, and from what We have bestowed upon them they spend. (16) And no soul knows what has been hidden for them of comfort for eyes, as reward for what they used to do." And His saying: "They used to sleep but little of the night." And At-Tirmidhi narrated from Abu Umamah that the Messenger of Allah, peace and blessings be upon him, said: "Hold fast to night prayer, for it was the practice of the righteous before you, and it is a means of drawing closer to your Lord, an expiation for sins, and a deterrent from wrongdoing."