When He (ﷺ) used to receive pleasant news, He (ﷺ) would say:

اَلْحَمْدُ لِلَّهِ الَّذِيْ بِنِعْمَتِهِ تَتِمُّ الصَّالِحَاتُ

Alhamdu lillaahil-lathee bini'matihi tatimmus-saalihaat

Praise is to Allah Who by His blessings all good things are perfected.

Reference: Hasan. Ibn Majah: 3803