"I heard the Messenger of Allah say; 'If you cannot find an Izar then wear pants, and if you cannot find sandals then wear khuffs, but cut them so that they come lower than the ankles.
Sunan an-Nasa'i Book 24, Hadith 61
← Previous Hadith "I heard the Prophet say; 'do not wear shirts, or pants, or 'Imamahs, or burnouses, or Khuffs while in Ihram.'''(sahih)

Sunan an-Nasa'i Book 24, Hadith 60 Next Hadith → That the Prophet said "If a Muhrim cannot find sandals then let him wear Khuffs, and cut them, so that they come lower than the ankles.''

Sunan an-Nasa'i Book 24, Hadith 62