20. Muhammad ibn al-Hasan ibn Ahmad ibn al-Walid said: Muhammad ibn al-Hasan alSaffar said, on the authority of Ahmad ibn Muhammad ibn `Isa, on the authority of `Ali ibn alHakam, on the authority of Hisham ibn Salim, on the authority of Sulayman ibn Khalid that Abu `Abd Allah al-Sadiq said: “Apprehension and delight do not occur from a servant unless he has been granted the ability for apprehension and delight.”