The Book of Zakat (Kitab Al-Zakat)
Muslim :: Book 5 : Hadith 2216
'Adi b. Hatim reported Allah's Messenger (may peace be upon him) as saying: Allah will speak with everyone amongst you without any interpreter between them. He (the man) would see towards his right and would not find anything but (the deeds) which he had done before, and he would see towards the left and would not find anything but (the deeds) which he had done before. He would see in front of him and would find nothing but Fire just before his face. So protect (yourselves) against Fire even if it is with the help of half a date. A hadith like this has been transmitted by Khaithama and addition has been made in this of (these words) ;" Even if it is with a good word."