979 - Yusuf ibn Abd Allah al-Iskafi wrote to me, mentioning that al-Hasan ibn Ali ibn al-Husayn al-Iskafi narrated to them that he asked Abu Abd Allah about the Hadith: 'Whoever is gladdened by his good deed and saddened by his evil deed, he is a believer.' Abu Abd Allah said: 'As for one who is gladdened by his evil deed, then what is he? Ask them.'