«من قال رضيت بالله ربا وبالإسلام دينا وبمحمد نبيا وجبت له الجنة»
The Prophet (peace and blessings be upon him) said:
"Whoever says: 'I am pleased with Allah as Lord, with Islam as religion, and with Muhammad (peace and blessings be upon him) as Prophet,' Paradise becomes obligatory for him."
Hadith Referenceصحیح الجامع الصغیر / حرف الميم / 6428