Supplicating to Allah is a direct way of communicating and connecting with Allah in Islam. While Allah hears the Islamic supplications of all believers, the dua of certain people is regarded as being accepted without exception according to Islamic teachings.

As the final messenger and most perfect of Allah's creations, Prophet Muhammad (PBUH) enjoys a uniquely special status. Allah assured his unconditional love and care for the Prophet (PBUH) multiple times in the Holy Quran.
Therefore, the Islamic supplications of the Prophet (PBUH) are never rejected by Allah. There are many examples during battles, while praying for his companions and family, at Arafat while performing hajj etc where his prayers were immediately accepted.
His supplications have a unique power and status due to his spiritual station with the Divine.
A parent's love for their children manifests in their constant Islamic supplications to keep them safe, healthy and guided towards righteousness. The dua of parents for their offspring are given special consideration by Allah.
The Prophet (PBUH) emphasized how a parent's prayers, especially of the mother, are never rejected by Allah and they lead to forgiveness for their children. Therefore, Muslims are advised to seek their parents' heartfelt prayers.
Fasting is a sincere act of worship and sacrifice purely for the sake of Allah. The Prophet (PBUH) gave glad tidings that as long as a fasting person does not curse, the dua at iftar time is never rejected.
Accordingly, Ramadan is an opportune period for making extensive Islamic supplications to Allah which He accepts without refusal. Sincere fasting softens hearts to make invocations more powerful.
Islam places great emphasis on upholding justice and condemning oppression of any kind. Accordingly, Allah assures that He never disregards or delays the Islamic supplications of someone who is oppressed or treated unfairly.
The dua of victims of injustice are answered immediately as protection of their rights. This shows Allah's care for the vulnerable against tyranny.
Traveling entails many uncertainties and risks that compel people to call upon Allah for safety. The Prophet (PBUH) gave the good news that Allah hears and accepts a musafir's (traveler's) Islamic supplications.
When starting the journey, while away from home, and even after returning, travelers' prayers for a safe passage are received by Allah. This highlights the importance of supplicating while undertaking difficult journeys.
In summary, while Allah hears the Islamic supplications of all believers, these five people enjoy the special status of their prayers never being rejected or ignored. Remembering this motivates Muslims to continually engage in heartfelt supplication as a direct channel to the Divine. The doors of Allah's boundless mercy and grace are always open to those who sincerely call upon Him.
In this regard, the eQuranekareem Online Quran Academy is here to teach you Dua, for every aspect of life.