Mukhtasar Muslim

It is narrated from Sayyiduna Abu Hurairah, may Allah be pleased with him, that the Messenger of Allah, peace and blessings be upon him, said: Surely, on the Day of Resurrection, (people's) sweat will reach seventy cubits (the span of both hands) into the earth, and for some people it will reach up to their mouths or ears. (The narrator of the hadith) Thawr is uncertain about this (whether he said up to the mouth or up to the ears).