EXCLUSIVE

Juelz Santana Hey, Judge ... Thanks for the Mani/Pedi!!!

Juelz Santana enjoyed a little QT with his daughter this weekend ... starting with a manicure/pedicure but not before a judge signed off on it.

The rapper -- who is under house arrest following an airport gun bust in March -- requested permission from a judge to leave his house so he could spend the day with his daughter, Bella, for her birthday.

It's interesting ... we haven't seen court records where a judge sets specific times on when a house arrestee can get his nails done, shop at American Girl Place and then attend a birthday party ... but, that's exactly what these docs lay out.

In docs, obtained by TMZ, Juelz's day started at 10 AM Saturday for manicures/pedicures at a nail salon in Englewood, NJ. Dad and daughter later hit up the American Girl Place in Manhattan at 2 PM presumably to spoil Bella with a fancy doll. They were then off to a family member's house in Totowa, NJ where they partied from 6 PM until 10 PM.

It all went according to schedule ... and Santana is back at his house.

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