ENOfficial
Ibn 'Abbas said, "Whoever listens to people's conversations when they do not want him to do so will have molten lead poured into his ears. Anyone who lies about a dram will be obliged to string a barley bead."
Source: sunnah.com
Other translations
Arabic
حَدَّثَنَا مُحَمَّدُ بْنُ سَلاَمٍ، قَالَ: أَخْبَرَنَا عَبْدُ الْوَهَّابِ الثَّقَفِيُّ، قَالَ: حَدَّثَنَا خَالِدٌ، عَنْ عِكْرِمَةَ، عَنِ ابْنِ عَبَّاسٍ قَالَ: مَنْ تَسَمَّعَ إِلَى حَدِيثِ قَوْمٍ وَهُمْ لَهُ كَارِهُونَ، صُبَّ فِي أُذُنِهِ الْآنُكُ. وَمَنْ تَحَلَّمَ بِحُلْمٍ كُلِّفَ أَنْ يَعْقِدَ شَعِيرَةً.
sunnah.com