I asked 'Aishah about the prayer of the Messenger of Allah ﷺ, and I said to her: At what time he prayed at night ? She said: When he heard the cock crow, he got up and prayed.
عَنْ صَلاَةِ رَسُولِ اللَّهِ ﷺ فَقُلْتُ لَهَا أَىُّ حِينٍ كَانَ يُصَلِّي قَالَتْ كَانَ إِذَا سَمِعَ الصُّرَاخَ قَامَ فَصَلَّى
He (the Holy Prophet) loved (that action) which one keeps on doing regularly. I said (to 'A'isha): When did he pray (at night)? She replied: When he heard the cock crow, he got up and observed prayer.
عَنْ عَمَلِ رَسُولِ اللَّهِ ﷺ فَقَالَتْ كَانَ يُحِبُّ الدَّائِمَ قَالَ قُلْتُ أَىَّ حِينٍ كَانَ يُصَلِّي فَقَالَتْ كَانَ إِذَا سَمِعَ الصَّارِخَ قَامَ فَصَلَّى
[Machine] About the Prophet's ﷺ night prayer, she said: Whenever he heard the caller to prayer, he would stand up and pray.
عَنْ صَلَاةِ النَّبِيِّ ﷺ بِاللَّيْلِ فَقَالَتْ كَانَ إِذَا سَمِعَ الصَّارِخَ قَامَ فَصَلَّى