Sayyiduna Anas bin Malik (may Allah be pleased with him) narrates: When we used to perform prayer behind the Prophet Muhammad (peace and blessings be upon him), and if any of us was unable to place his forehead on the ground due to the intensity of the heat, he would spread his garment and prostrate on it.
Hadith Referenceصحیح ابن حبان / كتاب الصلاة / 2354
Hadith Gradingفضيلة الشيخ الإمام محمد ناصر الدين الألبانيصحيح - «الإرواء» (311)، صحيح أبي داود» (666): ق.فضيلة الشيخ العلّامة شُعيب الأرناؤوطإسناده صحيح على شرطهما.