Bismillah. Alhamdulillahi rabbil-'alamin. Was-Salatu was-Salam 'ala Ashraful Anbiya Sayyidina Muhammad wa 'ala 'Alihi Muhammad.
The Hadith H 10, Ch. 1, h 10 in Kitab al-Kafi:
Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from ibn Mahbub from ‘Abdallah ibn Sinan who has said the following. "I mentioned a person, who would overdo the deeds of his doing Wudu and prayer to Imam abu ‘Abdallah (a.s) and added that he is a man of good intelligence." The Imam (a.s) then said, ‘What kind of intelligence is it that allows him to obey Satan.’ I then asked the Imam, "How would he be considered as obeying Satan?" The Imam (a.s) said, "Ask him wherefrom this thing comes to him. He will certainly say, "It comes from Satan."
What is the tafseer (commentary) of this Hadith?