Musannaf Ibn Abi Shaybah

Hazrat Abdul Wahab says that I asked Yunus whether a person can miss Friday prayer if his mother, father, or any relative is in the throes of death. He replied that Hasan used to grant concession even to the one responsible for a funeral, allowing him not to attend Friday prayer if he feared the deceased might pass away. Similarly, anyone who has a fear is also permitted not to attend.