USUL AL-KAFI on intelligence (or) simply... reason

Usul al-Kafi
Book 1: The Book of Intellect [Reason] and Ignorance

Chapter 1

Traditions or Ahadees

1. Imam Ali (p): Jibrael (p) (Gabriel) descended to meet Prophet Adam (p) and said, “O Adam, I have been ordered to offer you the choice of one out of three things. Therefore, choose one of them and leave the other two.”
Adam (p): And what are those three things, O Jibrael?
Jibrael (p): Intelligence, Modesty and Religion.
Adam (p): I choose Intelligence.
Jibrael (p) then asked Modesty and Religion to leave Adam. But they said, “O Jibrael, we have been ordered to remain with Intelligence wherever it may be.”
Jibrael (p): Lo! That is your choice.
Jibrael (p) then ascended to his heavenly abode.
Translator’s note: This tradition clearly asserts that reason is an integral part of religion and modesty. Also, religion is based on reason and sound logical deductions. All commandments, rulings and forms of worship are based on sound reasoning. There is nothing irrational in religion. Similarly, norms of modesty emanate from sound reasoning.(B1,T2)

2. On request Imam Jafar as-Sadiq (p) defined ‘intelligence’ as that by which God is worshipped and Paradise earned.
He (p) was then asked: What did Muawiyah posses?
Imam Jafar as-Sadiq (p): That was craftiness, a satanic trait which appears like intelligence but is not.(B1,T3)

3. Imam Ali ar-Reza (p): The best friend of a person is his intelligence and his worst enemy his ignorance.(B1,T4)

4. Imam Jafar as-Sadiq (p): One who has intelligence is blessed with religion and one who is blessed with religion will enter Paradise.(B1,T6)

5. Imam Muhammad al-Baqir (p): Surely, God will subject his servants to close scrutiny on the Day of Judgment according to the degree of intelligence bestowed on them in their worldly life. (B1, T7)