16. Muhammad ibn Musa ibn al-Mutawakkil said: `Abd Allah ibn Ja`far said Ahmad ibn Muhammad ibn `Isa said: al-Hasan ibn Mahbub said, on the authority of `Amr ibn Abu alMiqdam, on the authority of Salim ibn Abu Hafsah, on the authority of Mundhar al-Thawri, that Muhammad ibn al-Hanafiyah said: “Verily, this Ummah will not be ruined until they stat discussing (the nature of) their Lord.”