It wasnarrated that Anas bin Malik said:
"The Messenger of Allah(ﷺ),Abu Bakr and 'Umar used to start their recitation with 'All thepraises and thanks are to Allah, the Lord of all that exists(Al-hamduLillahi Rabbil-'Alamin)." [1:2] (TH)
English reference (TH): Vol. 1, Book 5, Hadith 813 (TH)
Arabic reference (TH): Book 5, Hadith 862 (TH)