عَنْ نَافِعٍ بْنِ جُبَيْرِ بْنِ مُطْعِمٍ عَنْ أَبِيهِ قَالَ: سَمِعْتُ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ يَقُولُ فِي التَّطَوُّعِ: اللَّهُ أَكْبَرُ كَبِيرًا ثَلَاثَ مِرَارٍ، وَالْحَمْدُ لِلَّهِ كَثِيرًا ثَلَاثَ مِرَارٍ وَسُبْحَانَ اللَّهِ بُكْرَةً وَأَصِيلًا ثَلَاثَ مِرَارٍ، اللَّهُمَّ إِنِّي أَعُوذُ بِكَ مِنَ الشَّيْطَانِ الرَّجِيمِ مِنْ هَمْزِهِ وَنَفْثِهِ وَنَفْخِهِ، قُلْتُ: يَا رَسُولَ اللَّهِ! مَا هَمْزُهُ وَنَفْثُهُ وَنَفْخُهُ؟ قَالَ: أَمَّا هَمْزُهُ فَالْمَوْتَةُ الَّتِي تَأْخُذُ ابْنَ آدَمَ (وَفِي رِوَايَةٍ قَالَ فَذَكَرَ كَهَيْئَةِ الْمَوْتَةِ يَعْنِي يُصْرَعُ) وَأَمَّا نَفْخُهُ الْكِبْرُ وَنَفْثُهُ الشِّعْرُ
Sayyiduna Jubair bin Mut’im says: I heard that the Noble Prophet (peace and blessings be upon him) recited three times in a voluntary prayer: ALLAHU AKBAR KABEERAN, three times ALHAMDULILLAHI KATHEERAN, and three times SUBHANALLAHI BUKRATAN WA ASEELA, and then said: A’UDHU BILLAAHIS SAMEE’IL ‘ALEEMI MINASH SHAYTAANIR RAJEEMI MIN HAMZIH WA NAFTHIH WA NAFKH. I asked: O Messenger of Allah! What is meant by his hamz, nafth, and nafkh? He (peace and blessings be upon him) replied: Hamz means madness and insanity, which befalls the son of Adam, and then he described the state of that madness, in which he falls unconscious. Nafkh means arrogance, and nafth means poetry.