Terach sold idols. The Midrash says he left Avram to mind the shop, and a woman came with a dish of fine flour to offer them.
וְאֵלֶּה תּוֹלְדֹת תֶּרַח תֶּרַח הוֹלִיד אֶת אַבְרָם אֶת נָחוֹר וְאֶת הָרָן׃
בראשית יא:כז
"These are the generations of Terach: Terach fathered Avram, Nachor and Haran."
Bereishis 11:27
He rose, took a club in his hand, and broke every one of them.
וַיָּמׇת הָרָן עַל פְּנֵי תֶּרַח אָבִיו׃
בראשית יא:כח
"Haran died in the presence of Terach his father."
Bereishis 11:28
Then he put the club in the hands of the largest one. When his father asked who had done it, he said: that one.
בְּאֶרֶץ מוֹלַדְתּוֹ בְּאוּר כַּשְׂדִּים׃
בראשית יא:כח
"In the land of his birth, in Ur Kasdim."
Bereishis 11:28