Musannaf Ibn Abi Shayba 27:233

Yahya ibn Abi Bukayr narrated to us, he said: Shu'bah ibn 'Abbad narrated to us, from Ibn Abi Sulayman, from Ibn Abi Najih, from Mujahid, he said: Maryam said: "When I was alone with 'Isa, he would speak to me and I would speak to him. And when a person would occupy me away from him, he would perform tasbih (glorify Allah) in my womb, and I would hear it."