Sunan an-Nasa'i 5252
سنن النسائي#5252SahihIt was narrated that 'Abdullah said:"May Allah curse Al-Mutanammisat and who have their teeth separated. Shall I not curse those whom the Messenger of Allah [SAW] cursed?
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 ZaiHasan
In-book reference: 48:213