Rasul Allah (sal Allahu alaihi wa sallam) said:
“Ask, and you shall be given it; and you shall be given it.”
[Tirmidhi]
Rasul Allah (sal Allahu alaihi wa sallam) said:
“Let everyone of you ask of His Lord all that He wants.”
[Tirmidhi]
HADITH EXPLANATION:
We were informed by our Prophet (sal Allahu alaihi wa sallam) that Allah (subhana wa ta’ala) fulfills everybody’s wishes so long as a person does not get impatient and say, ‘I asked Allah for so and so and I still haven’t received it.’ We are told never to despair of the mercy of Allah (subhan wa ta’ala).
The Prophet (sal Allahu alaihi wa sallam) informed us that there are several forms for the acceptance of dua. One is that you are given what you ask for. Another is that you are given better than what you asked for. A third is that some calamity that was about to befall you has been averted instead. The fourth is that the dua is saved up for you as sawaab/reward for the Day of Judgment. In all cases, asking Allah (subhana wa ta’ala) for things is beneficial.