Ibn Umar saw a man dragging his lower garment and asked, "Who are you from?"The man gave his lineage, and turned out to be from Banu Layth. Ibn Umar recognized him and said, "I heard the Messenger of Allah ﷺ with these two ears of mine say, 'Whoever drags his lower garment intending nothing by it but arrogance, Allah the Exalted will not look at him on the Day of Resurrection.'"
حدثنا محمد بن جعفر حدثنا شعبة وحجاج قال حدثني شعبة سمعت مسلم بن يناق يحدث
أنه رأى رجلا يجر إزاره فقال ممن أنت فانتسب له فإذا رجل من بنى ليث فعرفه ابن عمر فقال سمعت رسول الله ﷺ بأذني هاتين يقول من جر إزاره لا يريد بذلك إلا المخيلة فإن الله تعالى لا ينظر إليه يوم القيامة
Its chain of transmission is sahih. Muslim bin Yannaq, with a fatha on the ya and a doubled nun, was a trustworthy successor. Ibn Main, Abu Zura, and Nasai declared him trustworthy, and Bukhari gave his biography in al-Kabir 4/1/277. Muslim narrated the hadith at 2:155-156 through Muhammad bin Jafar from Shuba, and also through Abdul-Malik bin Abu Sulayman, Abu Yunus, and Ibrahim bin Nafi, all of them from Muslim bin Yannaq, with similar wording. Bukhari narrated it in al-Kabir in abridged form, in the biography of Muslim, through Mamar bin Qays from him.Muslim bin Yannaq has no narration in the six books other than this one, in Sahih Muslim and in Nasai, as stated in his biography in al-Tahdheeb, though I did not find it in Nasai. Its meaning has already appeared repeatedly through other chains, the most recent being number 5038.As for the wording "so he traced his lineage for him", this is what is established in H and M, and it agrees with what is in Sahih Muslim. In K it reads "so trace your lineage for us", making it an imperative verb, and this is established in a marginal copy of M, while what appears here is established in a marginal copy of K.