Sunan Abi Dawud 782
سنن أبي داود#782Sahih‘Anas said:The Prophet(peace be upon hm), Abu Bakr, ‘Umar and ‘Uthman used to begin the recitation with “Praise be to Allah, the Lord of the Universe.”
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Muhyi Al-Din Abdul HamidSahih
Shuaib Al ArnautSahih
Zubair Ali ZaiSahih Bukhari (743) Sahih Muslim (399)
In-book reference: 2:392