you're welcome.
As for your second question,
Yes, we can still benifit from the Prophet, may peace be upon him, even after his death. And there is NO narration against that, none of the scholars had said something against that, none of them said that the Prophet doesn't benifit us after his death, NONE OF THEM DID.
A very simple answer to this, read what happened in the night of Isra' and Mi^raj (The Night Journey and Ascension of Prophet Muhamad, may peace be upon him):
At first, Allah obligated fifty prayers. When Prophet Muhammad encountered Musa, Musa told him to make supplication (du^a') to his Lord to ease the obligation of fifty (50) prayers, because his nation could not handle that. Musa said, "I have experience with the people of Israel, and I know your nation cannot bear that." So the Prophet asked his Lord to lessen these prayers for his people. Five prayers were eliminated. Once again, Musa told the Prophet to ask Allah to lessen the number of prayers. Allah did. Nine times the Prophet made supplication to Allah to lessen these prayers--until these prayers were lessened to five Obligatory Prayers. So Prophet Musa was a great benefit to us. Had we been obligated to pray fifty prayers a day, this would have been a difficult matter for us.
This is a big benifit that we had from Prophet Moses, many many many years AFTER HIS DEATH.
That's just a simple and very clear answer, again, none of the scholars had said that the Prophets do not benifit us after their death. :no2
