«إن الله تعالى اصطفى من الكلام أربعا: سبحان الله والحمد لله ولا إله إلا الله والله أكبر فمن قال: سبحان الله كتبت له عشرون حسنة وحطت عنه عشرون سيئة ومن قال: الله أكبر مثل ذلك ومن قال: لا إله إلا الله مثل ذلك ومن قال: الحمد لله رب العالمين من قبل نفسه كتبت له ثلاثون حسنة وحط عنه ثلاثون خطيئة»
The Prophet (peace and blessings be upon him) said:
"Indeed, Allah Almighty has chosen four phrases from all speech: 'Subhan Allah' (Glory be to Allah), 'wal-hamdu lillah' (and praise be to Allah), 'wa la ilaha illallah' (and there is no god but Allah), and 'wallahu akbar' (and Allah is the Greatest). So whoever says 'Subhan Allah', twenty good deeds are written for him and twenty of his sins are erased. Whoever says 'wallahu akbar' has the same reward, and whoever says 'wa la ilaha illallah' has the same as well. And whoever says 'al-hamdu lillahi rabbil-'alamin' (praise be to Allah, Lord of the worlds) sincerely from his heart, thirty good deeds are written for him and thirty of his sins are erased."
Hadith Referenceصحیح الجامع الصغیر / حرف الألف / 1718
Hadith Gradingالألبانی:صحيح
Hadith Takhrij[حم ك الضياء] عن أبي سعيد وأبي هريرة معا. الترغيب ٢/٢٤٦.