Bukhari

Hadith Commentary:
This is why some have pronounced "Lat" (لات) with a shaddah (emphasis) on the letter "ta", and for those who have recited it with a lighter pronunciation, it can be explained that frequent usage led to the lightening of the pronunciation.
It is said that this person’s name was ‘Amr bin Luhayy or Harmah bin Ghanm.
He used to feed the pilgrims a mixture of clarified butter (ghee) and roasted barley flour (sattu) near a stone. When he died, people began to worship that stone at the very place where he used to serve the food, and they named the stone "Lat" so that it would remain as a memorial to that person.
Ibn Abi Hatim has narrated from Ibn Abbas (radi Allahu anhuma) that whoever ate his sattu would become fat, so people began to worship him. May the wrath of the Most Holy Lord be upon those fools.
(Wahidi)
Even today, many simple-minded common people are in the same state: on the basis of their self-invented devotion, they begin to consider many elders, after their death, as the fulfiller of needs (Qadi al-Hajat), and start worshipping and venerating them.
Today, in Tata Nagar, Jamshedpur, Bihar, at the residence of Janab Muhammad Ishaq Sahib (guard), I am writing this note. Here it was mentioned that, in exactly the same way, there was a person who used to work at the lime kiln (chuna bhatti) here. By chance, he became insane, and people, considering him to have attained closeness to God, made him into a "baba" (saint).
Now, after his death, his grave has been decorated and arranged in the form of a shrine, and he has become famous by the name "Chuna Baba". There, annual festivals (urs) and qawwali gatherings are held, and many people, considering him the fulfiller of needs (Qadi al-Hajat), stand with folded hands at his grave and present their petitions.
God knows where the intellect of Muslims has gone, that they, by falling into such superstitions, are tearing apart the banner of tawhid (monotheism) with their own hands.
Inna lillah. O Allah, guide my people, for indeed they do not know. Ameen.

Hadith Commentary:
1.
There are explanations regarding "Lat":
One is that it is considered to be derived from the word "Allah."
According to some scholars, Lat is derived from "balat," which means
to turn the neck.
Since those who worshipped it would turn their necks towards it and worship it, for this reason it was named Lat.
2.
Ibn Abbas (radi Allahu anhu) says:
This was a pious man who, during the season of Hajj, would mix and serve sattu (barley drink) to the pilgrims.
When he died, people made his grave a place of worship.
Then his statues were made and installed at various places.
And Allah knows best.