Riyad as-Salihin

Jabir (May Allah be pleased with him) reported: The Prophet (ﷺ) said, "For him who says: 'Subhan-Allahi wa bi hamdihi (Allah is free from imperfection, and I begin with praising Him, and to Him),' a palm-tree will be planted in Jannah."

[At- Tirmidhi].