To make the Heart Tender (Ar-Riqaq)
Ṣaḥīḥ al-Bukhārī 6523
أَلَيْسَ الَّذِي أَمْشَاهُ عَلَى الرِّجْلَيْنِ فِي الدُّنْيَا قَادِرًا عَلَى أَنَّ يُمْشِيَهُ عَلَى وَجْهِهِ يَوْمَ الْقِيَامَةِ
alaysa adh-dhī amshāhu ʿalā ar-rijlayni fī ad-dunyā qādiran ʿalā anna yumshiyah ʿalā wajhihi yawma al-qiyāmah
Transliteration generated from the Arabic vowel marks
The full narration
Narrated Anas bin Malik:A man said, "O Allah's Prophet! Will a Kafir (disbeliever) be gathered (driven prone) on his face?" The Prophet (ﷺ) said, "Is not He Who made him walk with his legs in this world, able to make him walk on his face on the Day of Resurrection?" (Qatada, a sub-narrator said: Yes, (He can), by the Power of Our Lord
Source
Ṣaḥīḥ al-Bukhārī · 6523
Ṣaḥīḥ