بُلُوغُ الْمَرَامِ
Bulugh al-Maram 461
The Book of Prayer
وَعَنِ السَّائِبِ بْنِ يَزِيدَ, أَنَّ مُعَاوِيَةَ قَالَ لَهُ: { إِذَا صَلَّيْتَ الْجُمُعَةَ فَلَا تَصِلْهَا بِصَلَاةٍ, حَتَّى تُكَلَّمَ أَوْ تَخْرُجَ, فَإِنَّ رَسُولَ اَللَّهِ - صلى الله عليه وسلم -أَمَرَنَا بِذَلِكَ: أَنْ لَا نُوصِلَ صَلَاةً بِصَلَاةٍ حَتَّى نَتَكَلَّمَ أَوْ نَخْرُجَ } رَوَاهُ مُسْلِم ٌ [1] .
Narrated as-Sa'ib bin Yazid (RA) that Mu'awiyah (RA) told him, "If you offer the Friday prayer, do not connect it with another prayer, till you talk or go out. Allah's Messenger (ﷺ) had commanded us accordingly: That we should not connect a prayer to another prayer till we talk or go out (in between them)." [Reported by Muslim]
Sunnah.com reference: Book 2, Hadith 381