burn the midnight oil
to study until very late at night
We burned the midnight oil for three nights in order to study for the exam.
Ravana plans to abduct Sita 2
He marks a 'Lakshmana Rekha' or safety-line outside their hut and pleads her not to step out of it. No one could harm her inside it.As Lakshmana leaves to find Rama, Ravana comes pretending to be a sage and asks for alms. He coaxes her to come out of the 'Lakshman Rekha'. Sita not wanting to displease the sage steps out of the safety line and gets abducted by Ravana.