كتاب المواقيت
Read the English translation first, with the original Arabic directly underneath.
It was narrated that Ibn 'Umar said:
"We stayed in the Masjid one night waiting for the Messenger of Allah (ﷺ) to pray 'Isha'. He came out to us when one-third of the night or more had passed, and he said when he came out: 'You are waiting for a prayer for which the followers of no other religion are waiting. Were it not that I would impose too much difficulty on my Ummah, I would have led them in prayer at this time.' Then he commanded the Mu'adhdhin to say the Iqamah and he prayed."
إِنَّكُمْ تَنْتَظِرُونَ صَلاَةً مَا يَنْتَظِرُهَا أَهْلُ دِينٍ غَيْرُكُمْ وَلَوْلاَ أَنْ يَثْقُلَ عَلَى أُمَّتِي لَصَلَّيْتُ بِهِمْ هَذِهِ السَّاعَةَ