The prophet (PBUH) said a person who leaves the prayer of 3 Fridays then GOD AZWA JUL will stamp his heart. Sunاn Nasai
It is narrated by Ibn e Umar that Prophet PBUH that when one of you dozes off in Friday prayer then he should get up from his place and sit somewher e else.
Imam abu Issa Tarmezi said that this is Hadith best.
Prophet PBUH said that a person who cleans himself according to will of God, he filters himself then leaves his house and enters in Jumma prayer and stayed silent then by the time prayrers happens then all his sins till are forgiven. SUNAN NASAI