كُنَّا مَعَهُ بِجَمْعٍ فَأَذَّنَ ثُمَّ أَقَامَ فَصَلَّى بِنَا الْمَغْرِبَ ثُمَّ قَالَ الصَّلاَةَ . فَصَلَّى بِنَا الْعِشَاءَ رَكْعَتَيْنِ فَقُلْتُ مَا هَذِهِ الصَّلاَةُ قَالَ هَكَذَا صَلَّيْتُ مَعَ رَسُولِ اللَّهِ صلى الله عليه وسلم فِي هَذَا الْمَكَانِ
It was narrated that Sa'eed bin Jubair said concerning Ibn 'Umar:
"We were with him (Ibn 'Umar) in Jam' (Muzdalifah), and he called the Adhan, then the Iqamah, then he led us in praying Maghrib. Then he said: 'The prayer,' and he led us in praying 'Isha', two Rak'ahs. I said: 'What is this prayer?' He said: 'This is how I prayed with the Messenger of Allah (S.A.W) in this place.'"
Ibn ‘Umar (may Allah be pleased with him) reported that the Messenger of Allah (may Allah's peace and blessings be upon him) combined the Maghrib and Ishā' prayers. He prayed three Rak‘ahs for Maghrib then two Rak‘ahs for Ishā' with one Iqāmah.
جَمَعَ رَسُولُ اللَّهِ صلى الله عليه وسلم بَيْنَ الْمَغْرِبِ وَالْعِشَاءِ بِجَمْعٍ صَلَّى الْمَغْرِبَ ثَلاَثًا وَالْعِشَاءَ رَكْعَتَيْنِ بِإِقَامَةٍ وَاحِدَةٍ .