Those who want the verses, supporting the Quran alone and only, please find the references from the Quran as below:
The Quran is sufficiently detailed by God the Most Wise, and it reminds us of this aspect repeatedly (6:19,38,55,97,114-116,119,126; 7:32,52,174; 9:11; 10:5,24,37; 11:1; 12:111; 13:2; 17:12; 30:28; 41:3; 41:44; 79:19)
The Quran is God’s word and it is complete (6:115; 19:64; 18:109). Asking trivial or irrelevant questions regarding practices and demanding more rules and instructions creates problems and confusion (2:67-70; 5:101).
The Quran is sufficient to guide those who are appreciative and intelligent (5:48-49; 6:112-114,159; 7:3; 10:15; 17:39,45-46; 25:30; 31:6; 36:2; 39:23,38; 35:43).
IF ALLAH SAYS HE EXPLAINS HIS BOOK THEN WHY DON.T THEY BELIEVE… HIM?
2:242. GOD thus explains His ayatihi so you may (taʿqilūna) use your intellect..
THUS do We “nufaṣṣilu/explain” the VERSES
and perhaps they will return 7:174)
THUS do We “*nufaṣṣilu /detail”
THE VERSES and the way of the criminals
will become evident (6:55)
We “faṣṣalnā /detailed” THE AYATS
for a KNOWLEDGEABLE PEOPLE (6:97)
We “faṣṣalnā/detailed” THE VERSES
for UNDERSTANDING PEOPLE (6:98)
He “faṣṣala/explained” in detail
To you what He has forbidden you…(6:119)
We “faṣṣalnā/detailed” THE VERSES
for A REMINDED PEOPLE (6:126)
THUS do We “nufaṣṣilu/detail”
THE VERSES for KNOWLEDGEABLE
PEOPLE (7:32)
A Book which We “faṣṣalnāhu/detailed”
with KNOWLEDGE as guidance and
mercy to a BELIEVING PEOPLE (7:52)
THUS do We “nufaṣṣilu/explain”
the VERSES and perhaps they
will return (7:174)
We “wanufaṣṣilu/explain” the VERSES
for a KNOWLEDGEABLE PEOPLE (9:8/11)
HE “yufaṣṣilu/He explains” THE VERSES
for a KNOWLEDGEABLE PEOPLE (10:4/5)
THUS do We “nufaṣṣilu/explain” THE VERSES for PONDERING-REFLECTING PEOPLE (10:24)
A Book, the Verses whereof are perfected and then “fuṣṣilat/explained” from ONE (GOD)
Who is All-Wise and Well-Acquainted (with all things) herewith/so that serve none but GOD (11:1/2)
HE arranges/regulates the matters/affairs, yufaṣṣilu/explaining” the VERSES
that you may FIRMLY BELIEVE in the meeting with your Lord (13:2)
EVERYTHING We explained/faṣṣalnāhu IN DETAIL (17:11/12)
THUS do We “explain/nufaṣṣilu”
THE VERSES in detail to a people
WHO USE AQL/INTELLIGENCE (30:28)
A Book whereof the AYATS are
“explained in detail/fuṣṣilat”
A Quran in Arabic for KNOWLEDGEABLE
people As a giver of good tidings and A warner;
but most of them turn away, so they do
NOT HEAR/LISTEN (41:3/4)
If We had sent this as A Quran
in a foreign language other than Arabic,
they would have said:
“Why are not its AYATS-Verses
“fuṣṣilat/explained” in detail
What, not in Arabic and an Arab” (41:43/44)
THUS do We nufaṣṣilu/explain” the VERSES
and perhaps they will return (7:174)
THUS do We “*nufaṣṣilu /detail”
THE VERSES and the way of the criminals
will become evident (6:55)
We “faṣṣalnā /detailed” THE AYATS
for a KNOWLEDGEABLE PEOPLE (6:97)
We “faṣṣalnā/detailed” THE VERSES
for UNDERSTANDING PEOPLE (6:98)
He “faṣṣala/explained” in detail
to you what He has forbidden you…(6:119)
We “faṣṣalnā/detailed” THE VERSES
for A REMINDED PEOPLE (6:126)
THUS do We “nufaṣṣilu/detail”
THE VERSES for KNOWLEDGEABLE PEOPLE (7:32)
A Book which We “faṣṣalnāhu/detailed”
with KNOWLEDGE as guidance and
mercy to a BELIEVING PEOPLE (7:52)
THUS do We “nufaṣṣilu/explain”
the VERSES and perhaps they will return (7:174)
We “wanufaṣṣilu/explain” the VERSES
for a KNOWLEDGEABLE PEOPLE (9:8/11)
HE “yufaṣṣilu/He explains” THE VERSES
for a KNOWLEDGEABLE PEOPLE (10:4/5)
THUS do We “nufaṣṣilu/explain” THE VERSES
for PONDERING-REFLECTING PEOPLE (10:24)
A Book, the Verses whereof are perfected
(in every sphere of knowledge, etc.),
and then “fuṣṣilat/explained” from ONE (GOD)
Who is All-Wise and Well-Acquainted (with all things)
herewith/so that serve none but GOD (11:1/2)
THUS do We “explain/nufaṣṣilu”
THE VERSES in detail to a people
WHO USE AQL/INTELLIGENCE (30:28)
HE arranges/regulates the matters/affairs,
“yufaṣṣilu/explaining” the VERSES
that you may FIRMLY BELIEVE
in the meeting with your Lord (13:2)
EVERYTHING We explained/faṣṣalnāhu IN DETAIL (17:11/12)