Hadith.1171 - Ammar al-Sabati asked Imam Jafar ibn Muhammad Al-Sadiq عليه السلام about a man who arrives at the mosque just as the Imam is concluding the prayer with the taslim (final salutation).
Imam عليه السلام replied: "He should give the adhan (call to prayer), make the iqamah (call to commence the prayer), and then begin his prayer."
