It is narrated from Sayyiduna Abdullah bin Amr (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: "Whoever dies on the day of Jumu'ah or the night of Jumu'ah is protected from the trial of the grave."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 13761