Nearest tongue edge — lam

The mechanic

The nearest part of the tongue's edge, running to its tip, meets the gum above the front teeth. Only ل emerges here.

Where it occurs

The letter produced at this point

ل

A place in the text

ٱلۡحَمۡدُ لِلَّهِ رَبِّ ٱلۡعَٰلَمِينَ

The marked spot was located in this ayah's own text at build time — Al-Fatihah 1:2.