Sunan an-Nasa'i 5334
سنن النسائي#5334SahihIt was narrated that Ibn 'Umar said:"The Messenger of Allah [SAW] said: 'Al-Isbal may apply to the Izar, the Qamis and the turban. Whoever drags any one of these out of vanity, Allah will not look at him on the Day of Resurrection
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiIsnaad Hasan
In-book reference: 48:295