Although there is no consensus in this regard...

Although there is no consensus in this regard, it is worthwhile that we recall what some scholars have opined in this connection. 1. `Allamah Sayyid Hasan al-Sadr, in his esteemed work Ta'sis al. Shi'ah li al-`ulum al-'Islamiyyah (p. 321), writes that the first book con­cerning ayat al- ahkam was written by Muhammad ibn Sa'ib al-Kalbi (d. 146/763). This view has been endorsed by Ibn al-Nadim in his al-­Fihrist (p. 57), wherein he writes: "Al-Kalbi's Kitab ahkam al-Quran has been…