Question Summary:
Will an oath be valid if it is made in the heart without uttering it?

Question Detail:

Will an oath be valid if it is made in the heart without uttering it? 

Answer :

In the Name of Allah, the Most Gracious, the Most Merciful.

As-salāmu ‘alaykum wa-rahmatullāhi wa-barakātuh. 

An oath needs to be uttered for it to be valid and binding.[1]

And Allah Ta’āla Knows Best

Tahmid Chowdhury

Student Darul Iftaa

New York, USA

Checked and Approved by,

Mufti Ebrahim Desai.

[1]

البحر الرائق شرح كنز الدقائق (12/ 127)

وركنها اللفظ المستعمل فيها

الدر المختار شرح تنوير الأبصار وجامع البحار (ص: 280)

وركنها اللفظ المستعمل فيها