hadith
4075
۞
The Prophet (SAWA) said, ‘The supplication that is preceded by “In the Name of Allah, the all-Beneficent, the all-Merciful” will not be rejected.
رسولُ اللهِ (صَلَّيَ اللهُ عَلَيهِ وَ آلِهِ): لا يُرَدُّ دُعاءٌ أوَّلُهُ بِسمِ اللّهِ الرّحمنِ الرَّحيمِ .