The wife of your wife’s father is not considered a mahram (a relative one may not marry) for you
Machine translationRead the Arabic original
Question:
He says: Honorable Shaykh, may Allah grant you success. Is the wife of my wife’s father forbidden to me?
Answer:
No, what is your relationship to her? Is she forbidden to you? I say she is forbidden to you because she is a stranger to you. And who is she? The wife of my wife’s father, the wife of the wife’s father, the wife’s father, yes, she is forbidden to him; she has no relationship to him, yes.
He says: Honorable Shaykh, may Allah grant you success. Is the wife of my wife’s father forbidden to me?
Answer:
No, what is your relationship to her? Is she forbidden to you? I say she is forbidden to you because she is a stranger to you. And who is she? The wife of my wife’s father, the wife of the wife’s father, the wife’s father, yes, she is forbidden to him; she has no relationship to him, yes.
Source
قناة «العلامة الدكتور صالح الفوزان»، [2058 -2802] زوجة والد زوجتك لا تُعدٌّ محرماً لك - الشيخ صالح الفوزان — youtube.com
The Arabic text is a machine transcription of the audio recording.