Prolongation for a temporary sukun

The mechanic

A madd letter followed by one more letter at a place where the reciter stops; the final letter's vowel is dropped on stopping, and the madd before it is drawn out. It exists only while stopping and vanishes when reading on.

Where it occurs

Its condition

ا و ي

Length, as reported

Two, four and six harakat are all reported.

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.