It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that the Noble Prophet (peace and blessings be upon him) used to perform two (Sunnah) rak‘ahs in his house after Jumu‘ah.
Hadith Referenceسنن دارمي / من كتاب الصللاة / 1612
Salim narrated from his father, Sayyiduna Abdullah bin Umar (may Allah be pleased with them both), that the Noble Prophet (peace and blessings be upon him) used to pray two rak‘ahs after Jumu‘ah.
Hadith Referenceسنن دارمي / من كتاب الصللاة / 1613
It is narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) said: "Whoever among you wishes to perform prayer after Jumu'ah should perform four rak‘ahs (Sunnah)." Imam Darimi Abu Muhammad (may Allah have mercy on him) said: I perform two or four rak‘ahs (Sunnah) after Jumu'ah.
Hadith Referenceسنن دارمي / من كتاب الصللاة / 1614