إِنَّ أَبْوَابَ الْجَنَّةِ تَحْتَ ظِلَالِ السُّيُوفِ. (Jāmiʿ al-Tirmidhī, 1659)
Translation: Indeed, the gates of Paradise are under the shadows of swords.
One narrator of this report is Jaʿfar ibn Sulaymān. The example concerns his ḍabṭ (ضبط): precision in remembering Hadith.