عن أبي هريرة قال: قال رسول الله صلى الله عليه وسلم: من سره أن يستجيب الله له عند الشدائد والكرب فليكثر الدعاء في الرخاء (سنن الترمذي الرقم: 3382)

Hazrat Abu Hurairah (radhiyallahu ‘anhu) reports that Rasulullah (sallallahu ‘alaihi wasallam) said, “The one who wishes that Allah Ta‘ala will answer his du‘aa in times of difficulty and worry, then he should engage in abundant du‘aa in times of ease and comfort (i.e. one should not only turn to Allah Ta‘ala in du‘aa at times of hardship, rather one should make du‘aa to Allah Ta‘ala at the time of ease and comfort as well).”