مُطِرْنَا بِفَضْلِ اللهِ وَرَحْمَتِهِ

We have been given rain by the grace and mercy of Allāh.

Référence: We have been given rain by the grace and mercy of Allāh. Al-Bukhārī (#846, 1/205) and Muslim (#71, 1/83).