(155) بَابُ يُحْثَى فِي وُجُوهِ الْمَدَّاحِينَ
'Ata' ibn Abi Rabah reported that a man was praising another manin the presence of Ibn 'Umar. Ibn 'Umar began to throw dust towards hismouth. He said, "The Messenger of Allah, may Allah bless him and granthim peace, said, 'When you see those who praise people, throw dust in theirfaces.'"
Reference: Al-Adab Al-Mufrad 340
In-book reference: Book 16, Hadith 8
English translation: Book 16, Hadith 340