Imam Ibn Qayyim al-Jauziyyah:
“Friday prayer is one of the most important obligations in Islam, and one of the greatest gatherings of the Muslims. Gathering on Friday is more important and more obligatory than any other gathering apart from ‘Arafah. Whoever neglects it, Allah will place a seal on his heart.”
(Zad-ul Ma’ad, Translated by Jalal Abualrub 3/31-32)
Ibn ‘Umar used to pray two rak’ahs in his house after the Friday prayer, and he used to say: This is how the Messenger of Allah (ﷺ) did.
(Narrated by Nafi in Sunan Abu Dawud 1127, Graded Sahih by Shaykh al-Albani)
Imam Ahmad was asked:
“What if someone attends the Jumu’ah and the place is very crowded and he cant preform ruku’ nor sujud?” Imaam Ahmad replied: “Follow the Imam, even if you have to make sajdah upon the back of the person in front of you!”
[“Masa’il Al-Imam Ahmad”, 2/872]
“Whoever reads Soorat al-Kahf on the day of Jumu’ah, will have a light that will shine from him from one Friday to the next.”
(Narrated by al-Haakim, 2/399; al-Bayhaqi, 3/249. It was classed as saheeh by Shaykh al-Albaani in Saheeh al-Jaami’, 6470)
The Prophet (ﷺ) said, “Whoever takes a bath on Friday, purifies himself as much as he can, then uses his (hair) oil or perfumes himself with the scent of his house, then proceeds (for the Jumua prayer) and does not separate two persons sitting together (in the mosque), then prays as much as (Allah has) written for him and then remains silent while the Imam is delivering …the Khutba, his sins in-between the present and the last Friday would be forgiven.”
In-book reference : Book 11, Hadith 8
“Whoever washes his head on the day of Jumu’ah, and takes a bath and arrives in time, and he walks and he does not ride, and he draws close to the imaam, and he listens and he does not speak. Then for every step which he takes, there will be for him the reward of a year: the reward of fasting it and standing in Prayer.”
Shaikh al-Albaanee (rahimahullaah) said this hadeeth is (saheeh) authentic.