It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: "When one of you stands for prayer, let him level the place of his prostration (at the very start), and not leave it until, when he bends down to prostrate, he blows (on it) and then prostrates. For one of you to prostrate on a burning ember is better than for him to prostrate on a spot he has blown on."
Hadith Referenceالمعجم الأوسط / باب الألف / 242
Hadith Gradingمحدثین:إسناده ضعيف، فيه عبد المنعم بن بشير منكر الحديث
Hadith Takhrij«قال الهيثمي: فيه عبد المنعم بن بشير وهو منكر الحديث «مجمع الزوائد ومنبع الفوائد، ج 2، ص 83»»