Six rak'ahs after Jumu'ah

It is narrated about Sayyiduna Ibn Umar (may Allah be pleased with them both) that when he was in Makkah and had prayed the Friday prayer, he would move forward and pray two rak'ahs, then move further forward and pray four rak'ahs; but when he was in Madinah, after praying the Friday prayer he would return to his house and pray two rak'ahs there, and he would not pray voluntary prayers in the mosque. When he was asked about this, he said: The Messenger of Allah (peace and blessings be upon him) used to do so.
This hadith is sahih (authentic) on the condition of the two Shaykhs (Bukhari and Muslim), but they did not record it with this wording; rather, both of them agreed on the hadith of Ibn Umar about praying two rak'ahs at home, and Imam Muslim alone narrated that he (peace and blessings be upon him) used to pray four rak'ahs after the Friday prayer. Ibn Jurayj corroborated Yazid bin Abi Habib in his narration from Ata:

It is narrated from Ata (may Allah have mercy on him) that he saw Sayyiduna Ibn Umar (may Allah be pleased with them both) on Friday move forward a little from the place where he had prayed the Friday prayer and pray two rak'ahs, then walk some further distance than that and pray four rak'ahs. The narrator says: I asked Ata: How many times did you see Ibn Umar (may Allah be pleased with them both) doing this? He said: Many times.

It is narrated from Sayyiduna Abu Dharr (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: "Whoever performs the ritual bath (ghusl) on Friday and does it well, purifies himself and does so in the best manner, wears the best of his clothes, applies whatever perfume Allah has decreed for him or the oil of his household, and does not separate between two people (in the mosque, i.e. does not push his way forward through the rows), is forgiven (his sins) until the next Friday."
This hadith is sahih (authentic) on the condition of Imam Muslim, but the two Shaykhs (Bukhari and Muslim) did not record it.

It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: "When any of you begins to doze on Friday while sitting in his place, let him change that place of his."
This hadith is sahih (authentic) on the condition of Imam Muslim, but the two Shaykhs (Bukhari and Muslim) did not record it.

Sayyiduna al-Zubayr bin al-Awwam (may Allah be pleased with him) narrates: We used to pray the Friday prayer with the Messenger of Allah (peace and blessings be upon him), then we would hurry towards the shade, but that shade would only be the length of one or two feet.
The chain of this hadith is sahih (authentic), but the two Shaykhs (Bukhari and Muslim) did not record it; however, Imam Bukhari narrated it from Sayyiduna Anas (may Allah be pleased with him) in a different wording.