DOB for parents while filling I-130

[usamn]

I became US citizen through Greencard. While applying my Greencard, I had different dob for my parents in Biographic form.
Now I am in process of applying Greencard for my parents. I realized they have different date of birth in their passport. Which DOB should I use for them while filling their I-130? Any suggestions? Thanks in advance!!

[Awan96]

U should use the date of birth which is written on your parents passport.

[usamn]

Thank you!!