No Angels or Other Creatures Know Everything in the Heavens and Earth.

My daughter asked me: Who is the angel who knows everything in the
heavens and the earth, the number of drops of water, the number of
grains of sand? Is there any such thing?
Praise be to Allah
The one who knows everything in the heavens and on earth, and knows
the number of drops of water and the number of grains of sand is
Allah, the Lord of the Worlds. There is no angel who is close to Him
or any Prophet who was sent who has this knowledge. Anyone whosays
that there is anyoneamong the angels who knows all of this has
fabricated a lie against Allah, to Whom belongs knowledge of the
unseen of the heavens and the earth.
Allah, may He be exalted,says (interpretation of the meaning):
"And with Him are the keys of the Ghaib (all that is hidden), none
knows them but He. And He knows whatever there is in (or on) the earth
and in the sea; not a leaf falls, but he knowsit. There is not a grain
in the darkness of the earth nor anything freshor dry, but is written
in aClear Record" [6:59].
And He, may He be glorified, says (interpretation of the meaning):
"Say: None in the heavens and the earth knows the Ghaib (unseen)
except Allah, nor can they perceive when they shall be resurrected"
[27:65].
Ibn Katheer (may Allah have mercy on him) said:Here Allah, may He be
exalted, is instructing HisMessenger (blessings and peace of Allah be
upon him) to tell all of mankind that no one knows the unseen except
Allah, may He be glorified and exalted, and that He alone has that
knowledge, with nopartner or associate. Endquote from Tafseer Ibn
Katheer, (6/207).
Al-Bukhaari (4697) narrated from Ibn 'Umar (may Allah be pleased with
him) that the Messenger of Allah (blessings and peace of Allah be upon
him) said: "The keys of the Unknown are five, whichno one knows except
Allah: no one knows what will happen tomorrow except Allah; no one
knows what is in the wombs except Allah; no one knows when it will
rain except Allah; no one knows in which land he will die; and no one
knows when the Hour will begin except Allah."
But Allah, may He be exalted, may inform whomever He wills among His
creation about whatever He wills of His unseen. Allah, may He be
exalted, says (interpretation of the meaning):
"(He Alone) the All-Knower of the Ghaib (unseen), and He reveals to
none His Ghaib (unseen). Except to a Messenger (from mankind) whom He
has chosen (He informs him of the unseen as much asHe likes), and then
He makes a band of watching guards (angels) to march beforehim and
behind him." [72:26, 27].
The scholars of the Standing Committee said: Knowledge of unseen
matters is something that belongs exclusively to Allah, so no one
among His creation, human or jinn, knows anything of it except what
Allah reveals to whomever He wills among His Angels or His Messengers.
End quote from Fataawa al-Lajnah ad-Daa'imah, (1/346).
Yes, there is an angel who is appointed in charge of the rain, and
directs it wherever Allah wills; he is Mikaa'eel (peace be upon him),
who has helpers who dowhatever he instructs them to do. But this only
happens by the will of Allah and in accordance with His wisdom and
knowledge. They do not know anything or do anything; rather they
cannot do anything at allexcept by Allah's leave. Moreover, that does
not mean that they know the number of drops of water, because their
knowledge is restricted to what Allah has taught them, and they say,
as Allah tells us:
"Glory be to You, we have no knowledge except what you have taught us.
Verily, it is You, the All-Knower, the All-Wise"
[2:32].