Salaam,
I am not sure if there are any verses in the Qur'an specifically directed on laziness (or to motivate people to work hard). It mentions people who are lazy in performing their ibadah.
And what prevents their expenditures from being accepted from them but that they have disbelieved in Allah and in His Messenger and that they come not to prayer except while they are lazy and that they do not spend except while they are unwilling. (9:54)
Peace :shade: