The following sequence describes the moments immediately following the birth of Isa:
Obedient to her vow, Maryam remains silent and simply points to the infant Isa. Her people are incredulous, asking how they can speak to a baby in a cradle. maryam 26-30
Allah provides her with a specific strategy: vow a fast of silence. Scholars interpret this as a "fast of the tongue." She was to abstain from speaking to anyone for the sake of Allah. This silence served a dual purpose: maryam 26-30