The Messenger of Allah (peace and blessings be upon him) said: "Whenever Allah Almighty grants any of His servants a blessing and he says (over it) 'Alhamdu lillahi rabbil-'alamin' (All praise is for Allah, Lord of the worlds), then what he presented (in thanks) before Allah, the Mighty and Majestic, is better than (the blessing) he received."
Hadith Referenceالمعجم الأوسط / باب الألف / 1357
Hadith Takhrij«أخرجه الضياء المقدسي فى «الأحاديث المختارة» برقم: 2194، 2195، 2196، وابن ماجه فى «سننه» برقم: 3805، والبزار فى «مسنده» برقم: 7514»