Silsilat al-Ahadith al-Sahihah

It is narrated from Sayyiduna Abdullah bin Abbas, may Allah be pleased with him, that the Noble Prophet, peace and blessings be upon him, came to a man who was prostrating on his face but his nose was not touching the ground. The Prophet, peace and blessings be upon him, said to him: "Place your nose (on the ground) as well, so that it too prostrates along with you."