Safiyyah bint Huyayy ibn Akhtab (رضي الله عنها) was a descendant of Prophet Haroon (عَلَيْهِ السَّلَامُ), and this is why the Messenger of Allaah (صلى الله عليه و سلم) consoled her by saying that she was the daughter of a Prophet (referring to Prophet Haroon (عَلَيْهِ السَّلَامُ)). And in this context only the Prophet (صلى الله عليه و سلم) said that her Uncle was a Prophet (referring to Prophet Musa (عَلَيْهِ السَّلَامُ)).
As for the evidences from intellect, we ask: Do all these creatures exist by themselves, or by chance?
If you say they exist by themselves; this is rationally impossible, it was first non-existent, so how can it exist when it was non-existent?!
If you also say they exist by chance; then we say this is also impossible O denying one! All the things produced, like planes, rockets, vehicles and other forms of machinery, do they exist by chance?
Therefore, intellect, firmly and unequivocally, indicates the existence of Allaah.
The Prophet (sallallaahu ‘alayhi wasallam) said:
Give this nation the glad tidings of glory, establishment in the land, victory, and religious authority. And whoever of them performs an action of the Hereafter seeking with it this world, he will have no portion of the Hereafter from it.
Going to a person whose righteousness is known to you, and asking him to make du’aa for you is permissible, but it is befitting that you should not make a habit of requesting the righteous person to make du’aa (supplication) for you whenever you see him.
Making a habit of this was not from the practice of the salafs (رضي الله عنهم), and in addition, this action also contains a degree of reliance upon other people’s supplication.
The Prophet (peace and blessings of Allaah be upon him) did not tell anyone among his Sahaabah to ask anyone to make du’aa’ for them.
It is obligatory upon whoever is seeking beneficial knowledge that he memorizes the book of Allaah and ponders over it. Similarly, he should memorize from the sunnah [the ahadeeth of the Prophet (peace be on him)], as much as he can, and reflect upon them.
Furthermore, he should learn Arabic and grammar to the extent that he can express himself correctly and understand the Qur’an and Sunnah well as also the writings of the Salaf.