All these evidences prove that assassination of Umar by Abu Lu’lu’ah...
All these evidences prove that assassination of Umar by Abu Lu’lu’ah, was only a consequence of that conspiracy engineered by Hormuzan, due to the grudge and hatred harboured in his heart toward the Arabs, after their seizure of power and throne from the Persians and ruining their State and sovereignty. The fact that can never be disputed or refuted only by the ignorant, is that Ka’b al-Ahbar was among those who participated in this plot, with playing a great role in planning and executing it.
Hadith of Istisqa’: We learn from history (books) that a very extreme dearth and barrenness occurred to the land during caliphate of Umar, in the Ramadah 273 Year, Ka’b didn’t miss this chance without exploiting it as a means for directing to Islam one of his fierce stabs. So he said to Umar: When the Children of Israel were afflicted with such a calamity, they would seek water (from God) through the prophets’ ismah (infallibility).
Hence many narrations were reported stating that Umar said: This is the uncle of the Messenger of Allah, and full brother of his father, and doyen of Banu Hashim: al-Abbas. Then they betook themselves to him and sought water. Anas 274 said that the words uttered by Umar in this istisqa’: (O God) We used to implore You with our Prophet and You give us water, and now we beseech You with the uncle of our Prophet, and You will give us water.
Undoubtedly the purpose intended by this Jew through these words was only to mislead Umar regarding the first foundation upon which Islam was established, that is the sincere monotheism, so as to make him fall into the abyss of solicitation (tawussul) which means polytheism in itself.
Then on falling of Umar into this abyss and his being an example to follow, with his act turning to be a sunnah having an influential impact on all Muslims in respect of the Islamic doctrine throughout ages and generations, the fact entailing demolition of the firm basis of the Din. But Umar, who had that insight and knowledge of religion, took notice of the intrigue and did not fall in the trap set by this impostor.
So he never sought water through imploring anyone even the Prophet (S), satisfying himself with istighfar (asking for forgiveness). Abu Bakr Abu al-Dunya in his book al-Matar, and the book Mujabi al-da’wah on the authority of Khuwat ibn Jubayr, said: Umar went out for seeking water (from God). He performed two-rak’ah prayer and said (in supplication): O God, we ask You to pardon and give us water.