It was narrated from Ibn 'Umar that he prayed in Jam'a with the Messenger of Allah ﷺ with one Iqamah.  

أَنَّهُ صَلَّى مَعَ رَسُولِ اللَّهِ ﷺ بِجَمْعٍ بِإِقَامَةٍ وَاحِدَةٍ  

It was narrated from Salim, from his father, that the Prophet ﷺ joined them (Maghrib and 'Isha') in Al-Muzdalifah, and he prayed each of them with an Iqamah, and he did not offer any voluntary prayer before or after either of them.  

أَنَّ رَسُولَ اللَّهِ ﷺ جَمَعَ بَيْنَهُمَا بِالْمُزْدَلِفَةِ صَلَّى كُلَّ وَاحِدَةٍ مِنْهُمَا بِإِقَامَةٍ وَلَمْ يَتَطَوَّعْ قَبْلَ وَاحِدَةٍ مِنْهُمَا وَلاَ بَعْدُ  

"On the day of Al-Khandaq the idolators kept us from praying Zuhr until the sun had gone down; that was before the revelation concerning fighting was revealed. Then Allah, the Mighty and Sublime, revealed: Allah sufficed for the believers in the fighting.[1] The Messenger of Allah ﷺ commanded Bilal to say the Iqamah for Zuhr prayer, and he offered it just as he used to offer it on time. Then he said the Iqamah for 'Asr and he offered it just as he used to offer it on time. Then he called the Adhan for Maghrib and offered it on time." [1] Al-Ahzab 33:25.  

عَنْ صَلاَةِ الظُّهْرِ حَتَّى غَرَبَتِ الشَّمْسُ وَذَلِكَ قَبْلَ أَنْ يَنْزِلَ فِي الْقِتَالِ مَا نَزَلَ فَأَنْزَلَ اللَّهُ ﷻ { وَكَفَى اللَّهُ الْمُؤْمِنِينَ الْقِتَالَ } فَأَمَرَ رَسُولُ اللَّهِ ﷺ بِلاَلاً فَأَقَامَ لِصَلاَةِ الظُّهْرِ فَصَلاَّهَا كَمَا كَانَ يُصَلِّيهَا لِوَقْتِهَا ثُمَّ أَقَامَ لِلْعَصْرِ فَصَلاَّهَا كَمَا كَانَ يُصَلِّيهَا فِي وَقْتِهَا ثُمَّ أَذَّنَ لِلْمَغْرِبِ فَصَلاَّهَا كَمَا كَانَ يُصَلِّيهَا فِي وَقْتِهَا