"When my servants ask you concerning me, (tell them) I am indeed close (to them). I listen to the prayer of every suppliant when he calls on me." [2:186]
The place of duaa is so high to Allah, that the Prophet had said: "Nothing is more honourable to Allah the Most High than du`a." [Sahih al-Jami` no.5268].
He also said: "The most excellent worship is du`a." [Sahih Al-Jami` no. 1133];
and in order to warn those who are arrogant, or careless in making duaa, the Prophet said: "The most incapable person is the one who does not make du`a, and the most miserly person is the one who does not give salaam." [Sahih Al-Jami` no. 1055],
and further, said: "If one does not ask Allah, He will get angry with him." [Sahih al-Jami` no.2414]
Allah is the Glorious and the Mighty, the answerer of every person in need and every person with a request. Indeed Allah is free of all wants, and He is answerable to none. We have no other god, but Him, whilst He has many servants other than us. Indeed Allah has revealed:
"O mankind! It is you who stand in need of Allah, but Allah is Rich (Free of all wants and needs), Worthy of All Praise." [Qur'an 35:15]
So to fulfill our needs and wants, we must call on Him. Making Du'a to Allah, is a recognition of our weakness and His greatness. The Prophet had said:"Ask Allah for everything, even the lace of your shoes. If Allah does not provide, it will never be available." [Ibn al-Sunni, no. 349 - hasan. Supported by at-Tirmidhi 4/298 and others.]
And let not there be anyone who says: "... my Lord won't answer my prayer, because of this and that.. or because of so and so..". No! Indeed Allah is the Most Generous King. Is there anyone who met a king, and praised and glorified him, and then asked, yet the request was not granted? So what about Allah, the King of the Heavens and the Earth - who has total control over your life, your wealth and your future. Why would He not grant you your request?
Indeed, our beloved Prophet had said: "Verily your Lord is the One modest and Generous, and when His servant raises his hands to Him in supplication, He is diffident (in some wordings, shy or hesitant) from returning them empty." [Ahmad, Abu Dawud and at-Tirmidhi - Hasan]
BEST TIMES FOR MAKING DU'A: Middle of the night:
The Messenger (Peace and Blessing be upon him) said: "The Gates of Heaven are open at midnight, and a caller calls, 'Is there a supplicant that his supplication may be granted? Is there a petitioner that his petition maybe granted? Is there a distressed person so that his distress may be removed?' At that time, no Muslim makes a Dua but that it is answered, except for an adulteress who trades with her body, or a person who gathers his money unlawfully." [Sahih al-Jami' 2968]
At the time of Azan and between it and the Iqamah:
The Messenger (Peace and Blessings Be upon Him) said: "A Dua between Azan and the Iqamat is not refused, so make du'a at that time." [Ibn Khuzaymah, Ibn Hibban]
The Messenger (Peace and Blessing Be upon Him) said: "Two kinds of du'a are not rejected - or rarely are they rejected - du'a at the time of the call for prayer, and du'a at the time of fighting when the warriors are engaged with each other." [Abu Dawud]
On Friday after 'Asr The Messenger (Peace and Blessings Be upon Him) said: "Friday has twelve periods. Among them is a period when no Muslim asks Allah for anything but He grants it to him. Search for that period late after 'Asr." [Sahihal-Jami' 8402]
When it is raining:
The Messenger (Peace and Blessings Be upon Him) said: "Two kinds of du'a are not rejected: du'a at the time of the call for prayer, and du'a during rain." [Abu Dawud]
Being a parent, while fasting and while travelling:
The Messenger (sallallaahu 'alaihi wa sallam) said: "Three types of du'a are undoubtedly granted: a parent's du'a for his children, du'a of a fasting person, and du'a of the traveller." [Abu Dawud]
While Making Sujood:
The Prophet (Peace and Blessings Be upon Him) said: "The servant is closest to his Lord while in sujud, so ask Allah in that time."
Hazrat Aisha(R.A) asked the Prophet (Peace and Blessings Be upon Him) What should I say on Laylatil-qadr? And he replied, O Allah, indeed you are a Pardoner,and you love pardon; so pardon me "Allahuma inaka affuwun tuhibul afua Fa'afu Anni". The dua of a Muslim for his brother or sister Muslim stemming from the heart. Dua on the Day of Arafat Dua during the month of Ramadan Dua at the time of a Muslim gathering for the purpose of remembering Allah. Dua of the oppressed against the one who is oppressing him Dua of the father or mother for or against the son Dua of the traveler Dua of the one fasting until he breaks his fast. Dua of the one fasting at the time of breaking fast Dua of a desperate person Dua of a just Imam Dua of a son or daughter obedient to his or her parents Dua immediately after wudu saying what has been mentioned in the hadith that is directly related to it (ablution) Dua after stoning the small Shaitan (jamrat sugra) during Hajj Dua after stoning the middle Shaitan (jamrat wusta) during Hajj. Dua made inside the Ka'aba and the dua of one who prays inside the hijr as it is part of the house (bait Allah). [This is the semicircle to the right of the Ka'aba if you face the door.] Dua on the mount of Safa during Umrah or Hajj Dua on the mount of Marwa during Umrah or Hajj Customs and Manners of Making duas and the Causes for their Being Answered:
1. Faithfulness to Allah
2. To start with thanking Allah and praising Him and then giving salat on the Prophet (SAW) and ending the dua with the same.
3. To be serious in dua and certain that it will be answered
4. Persistence in the dua and not rushing it (Hadith says don't rush or be impatient. Don't say "I prayed for such and such a thing and Allah didn't answer my prayer. Allah dislikes that.)
5. To put your heart into the dua -- make it from your heart (even if you are reading the words, i.e., mean what you say)
6. Say dua in times of crisis as well as times that are good -- don't just say dua in times of need only.
7. Ask Allah alone -- and no one else.
8. Do not make dua on someone's family or money or child or life -- that is, don't say I wish that that person's family be destroyed, or I pray that she loses all her money, or I wish his oldest son would fail or I wish that he would die.
9. Make dua in a moderately low voice -- not silent yet not completely out loud.
10. Know your sins (faults) and seek forgiveness for them and know and acknowledge the benefits and blessings you have been given and thank Allah for them.
11. The oppressor should make amends for what he has done and repent.
12. Turn to Allah with humility, desire and fear of Him.
13. Do not use rhymed prose when making dua.
14. The supplication is (said) three (times). [Hadith that states that the Messenger of Allah (SAW) when making dua, repeated it 3 times.]
15. Face the Qiblah when making dua.
16. Raise the hands during dua [sunnah, not wajib]
17. Make wudu before making dua when possible.
18. Don't pray for injurious or harmful things to happen to people (like praying someone has an unfortunate mishap, or falls down, or chokes or breaks his leg, etc.) Also remember, that the Angels say "Ameen" and the same for you," after your dua.
19. The person making dua should start with himself if he is going to pray for someone else.
20. To make intercession to Allah by use of His beautiful Names and superior Attributes, or by some good deed that the supplicator performed or by the dua of a good man living, who is in his presence (e.g., asking someone who is a good Muslim to make dua for you)
21. That the food and drink and clothing is halal and of a halal source
22. Do not make dua for a sin or cutting off of family ties.
23. To order that which is good and forbid that which is forbidden
24. Distancing one's self from all types of sin.