It was narrated from Abu Al-Ja'd Ad-Damri-who was a Companion of the Prophet (ﷺ)- that the Prophet (ﷺ) said: Whoever missed three jumu'ahs out of negligence, Allah (SWT) will place a seal over his heart.
It was narrated from Al-Hakam bin Mina' that: He heard Ibn Abbas and Ibn Umar narrated that while he was on the minbar, the Messenger of Allah (ﷺ) said: People should stop negleting jumu'ah or Allah (SWT) will place a seal on their hearts and they will be deemed as being among the negligent.
It was narrated from Hafsah, the wife of the Prophet (ﷺ) that: The Prophet (ﷺ) said: Going to jumu'ah is obligatory for everyone who has reached the age of puberty.'