Quran 23:112-115 – Life Of This World Of 1 Day Or Part Of 1 Day
The comments are an independent guess and is right in accordance with how we humans comment on our past life at times (e.g. it went like a flash , it was just a matter of yesteday etc etc.). This becomes further clear in Quran 20:103-104 where someone would guess 10 days instead of one. This is not an actual quantification at their end, rather the same human linguistics which we adopt in showing the temporary nature of the past or this life specifically when seen in the hindsight.