My suggestion

Assuming the loan amount is 2m

Ask relative to park 2m in cash under ur name in fd. In the event relative runs road then u get to use tat money to repay loan. The interest ll go to u regardless relative is DOA. At the end of loan repayment relative gets to hav the 2m principal back into pocket. If relative doesn't agree on tis then just ask relative to stfu.

On top of the above, if relative has the intention to utilise ur loan capability then u r entitled to a big angpao n the angpao should b big enuf to cover any potential loss of opportunities in Wat so ever aspect. Otw relative should stfu oso.

Sekian 😎