Chapter on the Number of Phrases in the Adhan and Iqamah, and Their Description

And what was also narrated by him from Ahmad ibn al-Hasan from al-Husayn from Fadhala from al-‘Ala’ from Muhammad ibn Muslim: (Imam) Abu Ja‘far عليه السلام, peace be upon him, said: “My father عليه السلام used to call out in His عليه السلام house; ‘Al-salatu khayrun min al-nawm’ (Prayer is better than sleep), and if you repeat that, there is no harm in it.”