(18) باب الصَّلاَةِ بَعْدَ الْجُمُعَةِ
Abu Huraira reported Allah's Messenger (ﷺ) as saying:
When any one of you observes the Jumu'a prayer (two obligatory rak'ahs in congregation), he should observe four (rak'ahs) afterwards.
Reference: Sahih Muslim 881 a
In-book reference: Book 7, Hadith 86
USC-MSA web (English) reference(deprecated numbering scheme): Book 4, Hadith 1915