The Etiquettes of Dua (Supplication)

532. “O Moses! Whoever loves Me, will not forget Me and whoever hopes in My virtues, persists in his invocation. O Moses! I am not ignorant of My creatures but I love My angels to hear the supplication of My servants and My attendants to see how the children of Adam seek nearness to Me for the things the means and power of which are in My hand. O Moses! Say to Bani Israel, do not ever let blessings push you to rebellion, for in that case, they will be taken from you will fall into abjectness. Persist in Dua so that with My positive response you will be entitled to My Mercy and enjoy prosperity.”
It has been reported on the authority of Imam Baqer (AS):

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-”By God! No believer has ever persisted in expressing his needs which God has not fulfilled.”
It has been reported on the authority of Mansoor Seighal:

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533. “I said to Imam Sadeq (AS): Can a person recite Dua and his Dua is answered but there is a delay in it for sometime? The Imam said: Yes. I said: Why? Does he have to recite more Dua? The Imam said: Yes.”
It has been reported on the authority of Ishaq Ibne Ammar:

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534. “I said to Imam Sadeq (AS): Can the Dua recited by a person be fulfilled but with a delay? The Imam said: Yes, even as long as twenty years.”
Hesham Ibne Saalem has reported on the authority of Imam Sadeq (AS):

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535. “From the time God said to Moses and Haroon: “Your call was answered” to the descent of torment on Pharaoh it was forty years.”
Abi Baseer has reported on the authority of Imam Sadeq (AS):

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