In Qur'anic verses 21:91 & 66:12, Allah says that he breathed into Mary's vagina in order to conceive Isa (the Islamic Jesus). When looking at the tafsirs we find that Allah did this by sending the Angel Jibreel (Gabriel) to complete this task. The word "Farj" is used in these verses to indicate where Allah/Jibreel blew, and Farj means "vagina." The verse uses "Farjaha" which means "her vagina."
“...Allah sent the angel Jibril to Maryam, and he came to her in the shape of a man in every respect. Allah commanded him to blow into a gap of her garment and that breath went into her womb through her private part; this is how `Isa was conceived...” - Tafsir Ibn Kathir (read more)