Sayyiduna Jabir bin Abdullah (may Allah be pleased with him) says: I heard that Sayyiduna Umar bin Khattab (may Allah be pleased with him) was asking Sayyiduna Talhah bin Ubaidullah (may Allah be pleased with him): What is the matter that since the day the Messenger of Allah (peace and blessings be upon him) passed away, you have remained disheveled and covered in dust? Is it that you disliked your cousin (Abu Bakr Siddiq, may Allah be pleased with him) becoming the leader? Sayyiduna Talhah (may Allah be pleased with him) said: Allah's refuge! I am even more deserving than you not to do such a thing, (why would I dislike this matter). The fact is that I heard the Messenger of Allah (peace and blessings be upon him) saying: I know a word, whoever recites it at the time of death, as soon as his soul leaves his body, he attains mercy and comfort, and that word will be a source of light for him on the Day of Resurrection. But alas, I could neither ask you (peace and blessings be upon him) about that word nor did you (peace and blessings be upon him) explain it to me. This has made me sorrowful. Sayyiduna Umar (may Allah be pleased with him) said: I know that word. Upon hearing this, Sayyiduna Talhah (may Allah be pleased with him) said: Praise be to Allah, what is that word? He (may Allah be pleased with him) said: It is the word which the Messenger of Allah (peace and blessings be upon him) presented to his uncle (Abu Talib), that is, LAA ILAAHA ILLALLAH (There is no god but Allah). He said: You have spoken the truth.