Ghalib said: When we were sitting at al-Hasan's door, a man came along. He said: My father told me on the authority of my grandfather, saying: My father sent me to the Messenger of Allah ﷺ and said: Go to him and give him a greeting. So I went to him and said: My father sends you a greeting. He said: Upon you and upon your father be peace.
إِنَّا لَجُلُوسٌ بِبَابِ الْحَسَنِ إِذْ جَاءَ رَجُلٌ فَقَالَ حَدَّثَنِي أَبِي عَنْ جَدِّي قَالَ بَعَثَنِي أَبِي إِلَى رَسُولِ اللَّهِ ﷺ فَقَالَ ائْتِهِ فَأَقْرِئْهُ السَّلاَمَ قَالَ فَأَتَيْتُهُ فَقُلْتُ إِنَّ أَبِي يُقْرِئُكَ السَّلاَمَ فَقَالَ عَلَيْكَ وَعَلَى أَبِيكَ السَّلاَمُ