Answer:
(Fatwa: 2147/387=TB/1429)
Recite ya aziz (یا عزیز) after Isha in the state of wudhu facing the house of your in-laws 200 times for forty days. Also, recite durood thrice before and after. In-sha-Allah, their heart will melt down.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband
