To make the Heart Tender (Ar-Riqaq)
Ṣaḥīḥ al-Bukhārī 6570
لاَ إِلَهَ إِلاَّ اللَّهُ. خَالِصًا مِنْ قِبَلِ نَفْسِهِ
lā ilaha illā-Llāh. khāliṣan min qibali nafsihi
Transliteration generated from the Arabic vowel marks
The full narration
Narrated Abu Huraira:I said, "O Allah's Messenger (ﷺ)! Who will be the luckiest person who will gain your intercession on the Day of Resurrection?" The Prophet (ﷺ) said, "O Abu Huraira! I have thought that none will ask me about this Hadith before you, as I know your longing for the (learning of) Hadiths. The luckiest person who will have my intercession on the Day of Resurrection will be the one who said, 'None has the right to be worshipped but Allah,' sincerely from the bottom of his heart
Source
Ṣaḥīḥ al-Bukhārī · 6570
Ṣaḥīḥ
- Agreed upon as authentic (al-Bukhārī / Muslim)