Mujahid (may Allah have mercy on him) said: Seventy prophets (peace be upon them) prayed in Masjid al-Khayf, that is, the mosque of Mina; their clothing was of wool and their sandals were of palm leaves.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 4189