The angels meet at Fajr and Asr

Angels of the night and day gather at Fajr and Asr and report that we were praying.

Narrated by Abu Hurairah

Angels take turns among you by night and by day, and they gather at the Fajr prayer and the Asr prayer. Then those who stayed with you ascend, and their Lord, who knows best, asks them: "How did you leave My servants?" They say: "We left them praying, and we came to them while they were praying."

Sahih al-Bukhari 555, Sahih Muslim 632

What this hadith teaches

The angels' report to Allah is about our Fajr and Asr. Being found in prayer at those two times means the best possible report.

Reference and grade

Grade
Sahih: agreed upon by al-Bukhari and Muslim
Narrator
Abu Hurairah

The hadith in Arabic نص الحديث

يَتَعَاقَبُونَ فِيكُمْ مَلاَئِكَةٌ بِاللَّيْلِ وَمَلاَئِكَةٌ بِالنَّهَارِ، وَيَجْتَمِعُونَ فِي صَلاَةِ الْفَجْرِ وَصَلاَةِ الْعَصْرِ، ثُمَّ يَعْرُجُ الَّذِينَ بَاتُوا فِيكُمْ، فَيَسْأَلُهُمْ وَهْوَ أَعْلَمُ بِهِمْ كَيْفَ تَرَكْتُمْ عِبَادِي فَيَقُولُونَ تَرَكْنَاهُمْ وَهُمْ يُصَلُّونَ، وَأَتَيْنَاهُمْ وَهُمْ يُصَلُّونَ

Arabic text of Sahih al-Bukhari 555, as given on sunnah.com.