Sayyiduna Abdullah (may Allah be pleased with him) narrates it as the Prophet's words, that he (peace and blessings be upon him) said: "I am a man who will be taken (in death). Knowledge will soon come to an end, until two men will disagree about the obligatory shares, but will find no one who can inform them about it."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الفرائض / 12174