The test will end when the Sun rises in the West, and the faith of those who believe after that will be of no benefit

Hazrat Abu Hurairah relates: "The Messenger of Allah (saas) said:

"WHEN THE SUN RISES FROM THE WEST, WHAT PEOPLE CARRIED IN THEIR HEARTS WILL BE SEALED AND THE RECORDING ANGELS WILL WITHDRAW. THE ANGELS WILL BE COMMANDED TO RECORD NO MORE DEEDS." [Al-Kutub As-Sittah Translation and Commentary, Akçag Press: 14/324-327.]

BEDIUZZAMAN TELLS THAT WHEN THE SUN RISES FROM THE WEST THE DOOR OF REPENTANCE WILL BE CLOSED

Since belief and accountability are a test, a trial, a competition within the bounds of man’s will, theoretical issues that are obscure, profound, and in need of careful study and experiment cannot be obvious. They should not be so compelling that everyone has to affirm them willy-nilly. For in this way the Abu Baqr’s may rise to the highest of the high and the Abu Jahl’s descend to the lowest of the low. If there is no will, there is no accountability. It is because of this mystery and wisdom that miracles are displayed only rarely, and in this realm of accountability, like some allegorical verses of the Qur’an, the signs of the end of the world, which will be visible and seen, are obscure and open to interpretation. SINCE WHEN THE SUN RISES IN THE WEST IT WILL BE SO CLEAR EVERYONE WILL BE COMPELLED TO AFFIRM IT, THE DOOR OF REPENTANCE WILL BE CLOSED AND REPENTANCE AND BELIEF WILL NO LONGER BE ACCEPTED. (The Rays / The Fifth Ray - p. 99)