MANNAT OR OATH ON THE NAME OF A PERSON...

Similarly, it is not permissible to make a Mannat or take an oath on the name of someone else besides Allah Ta’ala as making Mannat is an Ibaadah and it is not permissible to do an Ibaadah for someone else besides Allah Ta’ala.

[English version of "Mannat ou promesse lors nom kikene ..." – Al Jamiat – Vol.1 No.5]