Musannaf Ibn Abi Shayba 33:13

Yahya ibn Abi Bukayr narrated to us, he said: Shu'ayb ibn 'Abbad narrated to us, from 'Umar ibn Abi Sulayman, from Ibn Abi Najih, from Mujahid, he said: Maryam said: "When I would be alone with 'Isa, he would speak to me and I would speak to him. But if a person occupied me away from him, he would glorify [Allah] in my womb, and I would hear it."