«ألا شققت عن قلبه حتى تعلم من أجل ذلك قالها أم لا؟ من لك بلا إلا الله يوم القيامة»
The Prophet (peace and blessings be upon him) said:
"Did you split open his heart so that you would know whether he said it for that reason or not? What will become of you on the Day of Resurrection regarding (the claim of) 'La ilaha illallah' (There is no god but Allah)?"
Hadith Referenceصحیح الجامع الصغیر / حرف الألف / 2654