And from him, from Sulayman ibn Ja‘far al-Ja‘fari who said:
I heard Him عليه السلام say: “Separate between the Adhan and the Iqamah with a sitting or with two units of prayer.”
Ali Akbar al-Ghaffari
Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 2, p. 68