1. A number of our people have narrated from Sahl ibn Ziyad from Ali ibn al-Hakam from Sulayman ibn ‘Amr al-Nakha’i that Abu 'Abdillah (al-Sadiq) (as) said
"If one experiences sorrow due to [the death of] someone, he should remember his sorrow of [losing] the Prophet (sw) for [his death] is the greatest of all sorrows."