6. Muhammad ibn Musa ibn al-Mutawakkil said: `Ali ibn al-Husayn al-Sa`dabadi said, on the authority of Ahmad ibn Muhammad ibn Khalid, on the authority of his father, on the authority of Abu Qatadah al-Qummi that `Abd Allah ibn Yahya said, on the authority of Aban al-Ahmar that Al-Sadiq Ja`far ibn Muhammad said: Verily, I swear by the One that send my grandfather as a righteous prophet that Allah, the Blessed and Exalted, give sustenance to a servant according to his generosity. Verily, the help provided from Heaven is based on the extent of the need. And verily, patience must match the level of affliction.