Yahya related to me from Malik that Safwan ibn Sulaym said, "If anyone omits jumua three times without reason or illness, Allah will set a seal on his heart." (Malik said, "I don't know if it was from the Messenger of Allah, may Allah bless him and grant him peace, or not)
Hadith No. 244
Muwatta Malik
Gradings:
Salim al-Hilali:
Sahih Lighairihi