Reference : Hisn al-Muslim 261

وَقَالَ صلى الله عليه وسلم: أَحَبُّ الْكَلاَمِ إِلَى اللَّهِ أَرْبَعٌ: (سُبْحَانَ اللَّهِ)، وَ(الْحَمْدُ لِلَّهِ)، وَ(لاَ إِلَهَ إِلاَّ اللَّهُ)، وَ(اللَّهُ أَكْبَرُ)، لاَ يَضُرُّكَ بِأَيِّهِنَّ بَدَأتَ
Allah's Messenger (ﷺ) said: The most beloved words to Allah are four:
Subḥānallāh
Walḥamdu lillāh.
Wa lā ilāha illallāh
Wallāhu Akbar.

Allah's Messenger (ﷺ) said: The most beloved words to Allah are four:

Glorified is Allah, 
and
The praise is for Allah, 
and
There is none worthy of worship but Allah, 
and
Allah is the Most Great.

Reference:
Muslim 3/1685.

Chapter: Excellence of Tasbih, Tahmid, Tahlil, and Takbir