قَالَتْ هُوَ مِنْ عِنْدِ اللّٰهِ
Maryam said, “It is from Allah.” (Qur'an 3:37)
The reply identifies the theological source of the gift: Allah alone. It is not evidence that a walī has autonomous creative power.
Ordinary provision is likewise from Allah, but this discussion concerns the remarkable circumstances of the provision. An observer's ignorance of a cause and an event beyond customary causation are not identical claims.