Why did Ibn Kathir portray Maryam (Alayhisalam) in a graphic and obscene way?

If we read the tafsir of Ibn Kathir about Surah Maryam, verse 23, we can find that he wrote the following in his commentary about Maryam (Alayhisalam):- Ibn Kathir states that many scholars of the predecessors (Salaf) have mentioned that the breath of Jibril **descended into the vagina of Mary (Alayhisalam)**. **He says, "SALAF HAVE MENTIONED THIS".** The word "Fihi" is masculine in the verses that talks about Mary's chastity and it may refer to the garment of Mary (Alahisalam). The word "Fiha" is the feminine one and it may refer to Marry herself. **The main question is: where is the narration or any sayings of any Salaf that state that the breath of Jibril descended into the vagina of Mary (Alayhisalam)?**