The Book of Divine Unity · Hadith 370 (#Ḥadīth #1)
Chapter 53 | Allah made the Nature of the Creation upon Divine Unity
1 - أبي رحمه الله، قال: حدثنا سعد بن عبد الله، عن أحمد بن محمد بن عيسى، عن محمد بن سنان، عن العلاء بن فضيل، عن أبي عبد الله عليه السلام، قال: سألته عن قول الله عز وجل: ﴿فطرة الله التي فطر الناس عليها﴾ قال: التوحيد.
1. My father said: Sa`d ibn `Abd Allah said, on the authority of Ahmad ibn Muhammad ibn `Isa, on the authority of Muhammad ibn Sinan, on the authority of al-`Ala ibn Fudayl that I asked Abu `Abd Allah al-Sadiq to interpret the Word of Allah, the Mighty and High: The nature made by Allah is which He has made men. He said: “It is Divine Unity.”
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).