Salim bin Abdullah (may Allah have mercy on him) narrates from his father, Sayyiduna Abdullah bin Umar (may Allah be pleased with them both), that the Messenger of Allah (peace and blessings be upon him) led the Maghrib and Isha prayers together at Muzdalifah. Ibn Abi Dhi'b (may Allah have mercy on him) said: No call was made for either of them except the iqamah, and he offered no voluntary prayer between them, nor after them.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 1914
It is narrated from Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) that on the Day of the Trench we were with the Messenger of Allah (peace and blessings be upon him) facing the enemy. The enemy kept the Messenger of Allah (peace and blessings be upon him) occupied from Zuhr, Asr, Maghrib and Isha until it was midnight. Then the Messenger of Allah (peace and blessings be upon him) stood up and he (peace and blessings be upon him) began with Zuhr, then offered Asr, then Maghrib and then Isha, one after another, with an iqamah for each.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 1915
(a) It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "When the iqamah for the prayer is given, walk with tranquillity and dignity upon you; whatever you catch, pray it, and whatever you miss, complete it."
(b) Imam al-Shafi'i (may Allah have mercy on him) said: Whoever comes at the end of the prayer has missed being present for its adhan and iqamah. He does not then give the adhan and iqamah for himself. To my knowledge the ruling is this: if someone comes to the mosque when the imam has finished leading the prayer and is leaving, he prays without adhan and iqamah.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 1916
Amr bin Dinar (may Allah have mercy on him) said that Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) used to say: Whoever prays in a mosque in which the iqamah for the prayer has been given, their iqamah suffices him.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 1917