HADEES:->

The Prophet ﷺ says, "The du`a' of any worshipper will continue to be
responded to, as long as hedoes not ask for a sin or breaking the ties
of kinship, and as long as he is not hasty."
It was asked, 'O Messenger of Allah, and what does it mean to be
hasty? He responded, 'A worshipper says, 'I have prayed and prayed,
and I don't see thatit will be accepted,' so he gives up hope of being
answered and leaves du'a'.'(Muslim)