It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: "Whoever says: 'Alhamdu lillahi qabla kulli ahad, wal-hamdu lillahi ba'da kulli ahad, wal-hamdu lillahi 'ala kulli hal' (All praise is for Allah before everyone, all praise is for Allah after everyone, and all praise is for Allah in every state), he will be given a reward equal to the worship of whoever has worshipped Allah, the Mighty and Majestic."
Hadith Referenceالمعجم الأوسط / باب الألف / 1009
Hadith Gradingمحدثین:فيه من لا يُعرف
Hadith Takhrij«قال الهيثمي: وفيه من لم أعرفهم «مجمع الزوائد ومنبع الفوائد، ج 10، ص 97»»