Hadith 5:5
Abu Mu'awiyah narrated to us, from al-A'mash, from 'Amr ibn Murrah, from Khaythama, from 'Adi ibn Hatim, who said: The Messenger of Allah (may Allah bless him and grant him peace) mentioned the Fire, so he turned his face away and averted it. Then he mentioned the Fire again, and he turned away and averted it, until we thought as if he were looking at it. Then he said: "Fear the Fire, even if with half a date. And whoever does not find [that], then with a good word."
حدثنا أبو معاوية عن الأعمش عن عمرو بن مرة عن خيثمة عن عدي بن حاتم قال ذكر رسول الله صلى الله عليه وسلم النار فأعرض بوجهه واشاح ثم ذكر النار فأعرض وأشاح حتى ظننا أنه كأنما ينظر إليها ثم قال اتقوا النار ولو بشق تمرة فمن لم يجد فبكلمة طيبة