Musannaf Ibn Abi Shaybah

Hazrat Saeed bin Musayyib, Hazrat Anas, and Hasan state that whoever gets one rak'ah of Jumu'ah should add one more rak'ah to it, and if someone finds the people sitting in the final sitting (Qa'dah Akheerah) of the Jumu'ah prayer, then he should pray four rak'ahs.

Hazrat Alqamah and Hazrat Aswad say that if a person finds people sitting in the final sitting (Qa'dah Akheerah) of the Friday prayer, he should perform four rak'ahs.

Hazrat Sha'bi was asked: If a person finds the people sitting in the final sitting (Qa'dah Akheerah) during the Friday prayer, what should he do? He replied: He should perform four rak'ahs.

Hasan says that if a person finds the people sitting in the final sitting (Qa'dah Akheerah) of the Friday prayer, then he should perform four rak'ahs.

Hazrat Anas bin Malik (may Allah be pleased with him) narrates that if a person finds people sitting in the final sitting (Qa'dah Akheerah) of the Friday prayer, he should perform four rak'ahs.

It is also narrated similarly from Ibrahim.