Dua #1120•At-Tirmidhi 5/511, and Al-Hakim who graded it authentic and Ath-Thahabi agreed 1/501. See also Al-Albani, Sahihul-Jami' As-Saghir 5/531 and Sahih At-Tirmidhi3/160.

Excellence of Tasbih, Tahmid, Tahlil, and Takbir

Hisnul Muslim
#1120

مَنْ قَالَ (سُبْحَانَ اللَّهِ الْعَظِيمِ وَبِحَمْدِهِ)غُرِسَتْ لَهُ نَخْلَةٌ فِي الْجَنَّةِ

Transliteration

Whoever says: Subḥānallāhi ‘l-'Aẓīmi wa biḥamdih will have a date palm planted for him in Paradise.

Translation

Whoever says: Glorified is Allah the Most Great and praised is He. will have a date palm planted for him in Paradise.