Abraham's father was called "TERAH" not "AZAR".
Quran 6:74 - And [mention, O Muhammad], when Abraham said to his father AZAR,...

 

SOURCE: https://www.jewishencyclopedia.com/articles/14330-terah
SOURCE: https://www.jewishencyclopedia.com/articles/360-abraham#anchor10 (Breaking Idols)
SOURCE: https://www.jewishencyclopedia.com/articles/360-abraham#anchor19

 

Genesis 11:26 - “And TERAH lived seventy years, and begat Abram, Nahor, and Haran.”
Genesis 11:27 - “Now these are the generations of TERAH: TERAH begat Abram, Nahor,...”
Genesis 11:31 - “And TERAH took Abram his son,...
Joshua 24:2 - ...even TERAH, the father of Abraham,...
1 Chronicles 1:26 - “Serug, Nahor, TERAH,”
1 Chronicles 1:27 - “Abram; the same is Abraham...

 

The Tafsirs - Tafsir al-Jalalayn, translated by Feras Hamza (6:74)
And mention when Abraham said to his father ĀZAR which was his cognomen his first name being TERAH (Tārikh)
SOURCE: https://www.altafsir.com/Tafasir.asp?tMadhNo=0&tTafsirNo=74&tSoraNo=6&tAyahNo=74&tDisplay=yes&UserProfile=0&LanguageId=2

 

cog-no-men (Latin: [kɔŋˈnoːmɛn]; plural cognomina; from con- "together with" and (g)nomen "name")
was the third name of a citizen of ancient ROME, under Roman naming conventions. Initially, it was a nickname,...
SOURCE: https://en.wikipedia.org/wiki/Cognomen

 

The History of al-Tabari, Vol II: Prophets and Patriarchs, Translated by William Brinner
Page 48, Discussion of Abraham, the friend of the Merciful.(128)
He was Abraham b(egotten by). TERAH b(egotten by). Nahor b(egotten by)...
FOOTNOTE: (128): "God's friend " in two passages of the Bible , Is 41:8 and II Chron 20 : 7.
There are many parallels to these Muslim tales in Jewish aggadic literature , and considerable scholarly
disagreement as to the direction of influence. See Ginzberg, Legends, V:2o9ff.; Encyc. /udaica, 2 : 11 Iff.
SOURCE: https://www.kalamullah.com/Books/The%20History%20Of%20Tabari/Tabari_Volume_02.pdf?__cf_chl_jschl_tk__=pmd_d8b278fbab4232b49dfc7b6052b3183bf4d5b8b1-1627575704-0-gqNtZGzNAg2jcnBszQjO
SOURCE: http://thesensiblemuslim.blogspot.com/2017/04/prophet-ibrahims-father-believer-or.html

 

Terah or Tārah (in Arabic: تارُخ [Tārukh] or تارَخ [Tārakh] or تارِخ [Tārikh]) is the name of the prophet Ibrahim (a)'s father.
SOURCE: https://en.wikishia.net/view/Terah

 

Mohamad Mostafa Nassar, Twitter:@NassarMohamadMR
SOURCE: https://islamcompass.com/was-azar-the-father-of-prophet-ibrahim-or-not/

 

Al-Islam .Org - The Shi'ite Encyclopedia -© Ahlul Bayt Digital Islamic Library Project 1995-2022
Subtitle: Was Azar the Father of Prophet Abraham?
But what is surprising, that knowing for fact Ibrahim’s (as) father was ‘Tarakh’ and NOT ‘Azar’ as stipulated by
some Sunni historians, which is in total conformity with the opinion of Shi’a. Ibn Katheer in his work on history
writes: Ibrahim (as) was the son of Tarakh. When Tarakh was 75 years of age, Ibrahim (as) was born to him.
Sunni reference: al-Bidaya wan Nahaya, by Ibn Katheer, v1 p139
This is also confirmed by Tabari, as he gives the lineage of Ibrahim’s (as) family in his history collection,
but then also in his Commentary of the Qur’an he states that ‘Azar’ was NOT the father of Ibrahim (as).
Sunni references: - History of al-Tabari, v1, p119
Sunni references: - Tafsir Tabari, by Ibn Jarir al-Tabari, v7, p158
SOURCE: https://www.al-islam.org/shiite-encyclopedia/was-azar-father-prophet-abraham