It is narrated from Hazrat Bara’ (may Allah be pleased with him) that on one occasion he demonstrated the method of prostration by performing it himself: he spread his hands, raised his buttocks, and kept his abdomen separate from the ground. Then he said that the Noble Prophet (peace and blessings be upon him) also used to prostrate in this manner.
Hadith Referenceمسند احمد / أول مسند الكوفيين / 18701
Hadith Gradingحکم دارالسلام:حديث صحيح، وهذا إسناد ضعيف لضعف شريك