Sunan an-Nasa'i, Book 26, Hadith 176 (In-Book) ⓘ

It was narrated that Al-Hasan said: "Aqil bin Abi Talib married a woman from Banu Jusham, and it was said to him: 'May you live in harmony and have many sons.' He said: 'Say what the Messenger of Allah said: Barak Allahu fikum, wa baraka lakum. (May Allah bless you and bestow blessings upon you.)'"

حَدَّثَنَا عَمْرُو بْنُ عَلِيٍّ، وَمُحَمَّدُ بْنُ عَبْدِ الأَعْلَى، قَالاَ حَدَّثَنَا خَالِدٌ، عَنْ أَشْعَثَ، عَنِ الْحَسَنِ، قَالَ تَزَوَّجَ عَقِيلُ بْنُ أَبِي طَالِبٍ امْرَأَةً مِنْ بَنِي جُشَمٍ فَقِيلَ لَهُ بِالرِّفَاءِ وَالْبَنِينِ ‏.‏ قَالَ قُولُوا كَمَا قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏ "‏ بَارَكَ اللَّهُ فِيكُمْ وَبَارَكَ لَكُمْ ‏" ‏ ‏.‏