I heard ‘Ali ؓ say: The Messenger of Allah ﷺ said: “When a person sits in the place where he prayed after praying the angels send blessings upon him, and their blessings upon him are: O Allah, forgive him. O Allah have mercy on him. And if he sits waiting for the prayer, the angels send blessings upon him, and their blessings upon him are: O Allah, forgive him, O Allah have mercy on him.
قَالَ رَسُولُ اللهِ ﷺ إِنَّ الْعَبْدَ إِذَا جَلَسَ فِي مُصَلاهُ بَعْدَ الصَّلاةِ صَلَّتْ عَلَيْهِ الْمَلائِكَةُ وَصَلاتُهُمْ عَلَيْهِ اللهُمَّ اغْفِرْ لَهُ اللهُمَّ ارْحَمْهُ وَإِنْ جَلَسَ يَنْتَظِرُ الصَّلاةَ صَلَّتْ عَلَيْهِ الْمَلائِكَةُ وَصَلاتُهُمْ عَلَيْهِ اللهُمَّ اغْفِرْ لَهُ اللهُمَّ ارْحَمْهُ