Practical Sanskrit: no substitute for hard work - उद्यमेन हि सिध्यन्ति कार्याणि
as a chariot (cart) can't move with one wheel, similarly, without hard work destiny doesn't bring fruit. यथ ह य क न चक र ण न ... even if by sheer luck, a treasure is seen lying in front, (as kAka-tAlIya nyAya), destiny doesn't give it in hand, some effort...