بسم الله الواحد القهار
Sheikh As-Saduq:
Punishment of going to Allah through other than His doors:
Narrated to me my father, may Allah bless have mercy on him, saying: narrated to me Sa'd Ibn Abdullah from Mohammad Ibn Al-Husain Ibn Abil Khattab from Safwan Ibn Yahya from Is'haq Ibn Ghalib from Abi Abdillah As-Sadiq (عليه السلام) who said: "A monk from Bani Israel worshipped Allah so much that he became like a dry stick. Allah, the Mighty and Sublime revealed to His prophet of that time to go and say to him that (Allah says), “By My Greatness, Might and Power, even if you worship Me till you melt like something in the cooking pot, also, I will not accept it from you until you come to Me from the door that I have ordered you to come to me.”
Footnote: and its chain is of the most authentic chains, its narrators are trustworthy and prominent and significant scholars and of the pillars in transmitting narrations.
Source: Iqaab Al-A'maal, Ch.1, Pg.5, H. 1