It is narrated from Sayyiduna Nafi' that when Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) prostrated, he would place his palms on the same thing on which his face was placed.
Nafi' says: I saw him on a day of severe cold bringing his palms out from under his cloak until he placed them on the pebbles.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 2672