It is narrated from Hazrat Abu Huraira (may Allah be pleased with him) that the Holy Prophet (peace and blessings be upon him) said: When you wish to offer voluntary prayers after Jumu'ah, then first offer four rak'ahs. If you are in a hurry for some reason, then offer two rak'ahs in the mosque and the remaining two rak'ahs after returning home.
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 9699