It is narrated from Yahya bin Talha, may Allah have mercy on him, that once Sayyiduna Umar Farooq, may Allah be pleased with him, saw Sayyiduna Talha, may Allah be pleased with him, in a disheveled state and asked, "What is the matter? Since the blessed passing of the Prophet (peace and blessings be upon him), you have become disheveled and covered in dust. Do you not like the caliphate of your cousin, that is, me?" He replied, "That is not the case. The real matter is that I heard the Prophet (peace and blessings be upon him) say that I know of a word, that if a person says that word at the time of death, then on the Day of Resurrection it will be a source of light for him and Allah will remove his worries. (I regret that I could not ask the Prophet (peace and blessings be upon him) about that word, and the Prophet (peace and blessings be upon him) himself did not tell me, and that is why I am worried.)" Sayyiduna Umar, may Allah be pleased with him, said, "I know that word." Sayyiduna Abu Talha, may Allah be pleased with him, asked, "What is that word?" He replied, "It is the same word that the Prophet (peace and blessings be upon him) presented before his uncle, that is: «لَا إِلٰهَ إِلَّا اللّٰهُ» ." Sayyiduna Talha, may Allah be pleased with him, said, "You have spoken the truth. By Allah! That is indeed such a word."