3. Muhammad ibn Musa ibn al-Mutawakkil said: `Ali ibn Ibrahim said: Muhammad ibn `Isa ibn `Ubayd said, on the authority of Yunus ibn `Abd al-Rahman, on the authority of `Abd Allah ibn Sinan that I asked Abu `Abd Allah al-Sadiq “What is the nature referred to in the Word of Allah, the Mighty and High: “The nature made by Allah is which He has made men.” He responded, It is Islam. Allah placed this nature in them when He created them and made a covenant with them regarding Divine Unity. Thus, He asked: Am I not your Lord? The covenant encompassed all those who believe and all those who disbelieve.