It is narrated from Hazrat Samurah (may Allah be pleased with him) that the Prophet (peace and blessings of Allah be upon him) said: The four words most beloved to Allah after the Qur'an are: La ilaha illallah, Allahu Akbar, Subhanallah, and Alhamdulillah. There is no harm in beginning with any of them.
Hadith Referenceمسند احمد / أول مسند البصريين / 20223
Hadith Gradingحکم دارالسلام:إسناده صحيح إن كان هلال بن يساف سمعه من سمرة