'Abdullah bin 'Umar (RA) reported: We waited one night in expectation of the Messenger of Allah (ﷺ) for the last prayer of the night, and he came out to us when a third of the night had passed even after that. We do not know whether he had been occupied with family business or something else. When he came out he said: You are waiting for prayer, for which the followers of no other religion wait, except you. Were it not a burden for my Ummah, I would have led them (in the 'Isha' prayer) at this hour. He then ordered the Mu'adhdhin (to call for prayer) and then stood up for prayer and observed prayer.
Hadith Referenceصحيح مسلم / كتاب المساجد ومواضع الصلاة / 639
'Abdullah bin 'Umar reported that the Messenger of Allah (ﷺ) was one night occupied (in some work) and he delayed it ('Isha' prayer) till we went to sleep in the mosque. We then woke up and again went to sleep and again woke up. The Messenger of Allah (ﷺ) then came to us and said: None among the people of the earth except you waits for prayer in the night.
Hadith Referenceصحيح مسلم / كتاب المساجد ومواضع الصلاة / 639
Abdullah bin Umar said: One night the Messenger of Allah ﷺ was busy and he delayed the night (isha) prayer so much so that we dosed in the mosque. We awoke, then dozed, and again awoke and again dozed. He (the prophet) then came upon us and said: There is none except you who is waiting for prayer.
Shaykh Umar Farooq Saeedi
Benefits and Issues: ➊ The Companions’ sleep was while sitting, not lying down, as is established from other ahadith. ➋ The ‘Isha prayer is a distinctive feature of the Muslim Ummah; furthermore, it is recommended to delay it rather than perform it at its earliest time, as will be explicitly mentioned in the upcoming hadith. ➌ Ablution (wudu) is not nullified merely by sleep, unless one lies down or leans in such a way that the limbs become relaxed. It was a special characteristic of the Messenger of Allah (sallallahu alayhi wa sallam) that even in sleep, his ablution remained intact. The following ahadith are clear evidence of this.
Source: Sunan Abu Dawood – Commentary by Shaykh Umar Farooq Saeedi, Page: 199
Abdullah bin Umar said: We remained one night waiting for the Messenger of Allah ﷺ to offer the Isha prayer. He came out to us when one-third of the night has passed or even after it. We did not know whether anything kept him occupied or there was some other matter. When he came out, he said: Are you waiting for this prayer ? Were it not that it would impose a burden on my people, I would normally pray with them at this time. He then gave orders to the muadhdhin who declared that the time of the prayer had come.
Shaykh Umar Farooq Saeedi
420. Commentary: The purpose of making them wait could also be so that these people may attain the reward of "waiting for worship," and so that the virtue of delay may be made known to them. In any case, this establishes the merit of performing the ‘Isha prayer with delay.
Source: Sunan Abu Dawood – Commentary by Shaykh Umar Farooq Saeedi, Page: 420
´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."
Hafiz Muhammad Ameen
538. Commentary: For further benefits, see Sunan an-Nasa'i, Hadith: 483, 537.
Source: Sunan Nasa'i: Translation and Benefits by Shaykh Hafiz Muhammad Amin Hafizullah, Page: 538