The commander of the believers, Umar al-Khattab said: ‘I am not worried about the answer to my Du’aa, rather about the supplication itself. If I am inspired to make Du’aa, Allah will answer it.’
The Du’aa has many mannerisms, which a person who supplicates should abide by when supplicating, so that his supplication would more likely be accepted.
How to preserve the favors of allah
Allah has shown the correct method to safeguard the favors and preserve them. Allah says: (And [remember] when your Rubb proclaimed, ‘If you are grateful, I will surely give you more; but if you deny, indeed, My punishment is severe.)
Means of protecting oneself
Saying ‘Bismillah’ (I begin with the name of Allah) whenever doing anything, for this would be a means of protection from Satan. The Prophet (s) said: ‘The protective barrier that prevents the Jinn from looking at the private parts of the children of Adam is to say ‘Bismillah’.’
Salah of istikhaarah
Before saying the Du’aa of Istikhaarah, one should praise Allah and glorify Him and then ask Allah to exalt the mention of the Prophet (s) thereafter, he should supplicate Allah saying:
O Allah, I consult You through Your Knowledge, and I seek strength through Your Power, and ask of Your Great Bounty; for You are Capable whereas I am not and, You know and I do not, and You are the Knower of hidden things. O Allah, if You know that this matter (here one should name it) is good for me in respect of my Deen, my livelihood and the consequences of my affairs, (or he said), the sooner or the later of my affairs then ordain it for me, make it easy for me, and bless it for me. But if You know this matter (one should again name it) to be bad for my Deen, my livelihood or the consequences of my affairs, (or he said) the sooner or the later of my affairs then turn it away from me, and turn me away from it, and decree for me good wherever it may be, and cause me to be contented with it.
Jowaire’yah said that the Messenger of Allah (s) left her quarters while she was praying, and he returned well after the sun had risen. He found that she was (still) sitting remembering Allah. He then said: ‘Have you been in this state since I left you?’ She said: ‘Yes!’ The Prophet (s) :
‘I said four words three times and were they to be weighed with all that you have said, they would outweigh them…
Subhanallah wa be'ham'de'he a'da'da khalqe'he wa re'daa naf'se'he wa ze'nata arshe'he wa me'daada ka'le'maatih.'
Meaning: I repeat the declaration that Allah is far removed from every imperfection, a number of times equal to the number of His creation, and until He is pleased.
The Prophet (s) said: ‘Shall I not inform you of a word which is of the treasures of Jannah? Laa hawla wa laa quwata il’laa bil’laah.’
Meaning: ‘No condition would change from a state to another nor is there any power except by Allah.’