Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
quran:55:1 – In the name of Allah, the Entirely Merciful, the Especially Merciful.

The Most Merciful  

The Compassionate One, God, exalted be He,
القرآن:٥٥:١ – بِسْمِ اللَّهِ الرَّحْمَٰنِ الرَّحِيمِ

الرَّحْمَٰنُ  

{الرحمن} الله تعالى.

See similar narrations below:

Collected by Qurʾān
quran:1:3 –

The Entirely Merciful, the Especially Merciful,  

The Compassionate, the Merciful: that is to say, the One who possesses ‘mercy’, which means to want what is good for those who deserve it.
القرآن:١:٣ –

الرَّحْمَٰنِ الرَّحِيمِ  

{الرحمن الرحيم} أي ذي الرحمة وهي إرادة الخير لأهله.