Dr. Mustafa Khattab, the Clear Quran - Surah Maryam, ayah 24

Translation of Surah Maryam, ayah 24 (19:24)

فَنَادَىٰهَا مِن تَحۡتِهَآ أَلَّا تَحۡزَنِي قَدۡ جَعَلَ رَبُّكِ تَحۡتَكِ سَرِيّٗا ٢٤
So a voice1 reassured her from below her, “Do not grieve! Your Lord has provided a stream at your feet.

Foot notes

222110

This was the voice of baby Jesus. Some say it was Gabriel.