1. بِسْمِ اللهِ الرَّحْمنِ الرَّحِيمِ
مَّا يَفْعَلُ اللّهُ بِعَذَابِكُمْ إِن شَكَرْتُمْ وَآمَنتُمْ وَكَانَ اللّهُ شَاكِرًا عَلِيمًا
Why should Allah chastise you if you are grateful and believe? And Allah is the Multiplier of rewards, Knowing
An Nisaa’ 4:147

2. بِسْمِ اللهِ الرَّحْمنِ الرَّحِيمِ
وَمَا كَانَ اللّهُ لِيُعَذِّبَهُمْ وَأَنتَ فِيهِمْ وَمَا كَانَ اللّهُ مُعَذِّبَهُمْ وَهُمْ يَسْتَغْفِرُونَ
But Allah was not going to chastise them while you were among them, nor is Allah going to chastise them while yet they ask for forgiveness. Al Anfal 8 : 33.

3. بِسْمِ اللهِ الرَّحْمنِ الرَّحِيمِ
قُلْ مَا يَعْبَأُ بِكُمْ رَبِّي لَوْلَا دُعَاؤُكُمْ فَقَدْ كَذَّبْتُمْ فَسَوْفَ يَكُونُ لِزَامًا
Say: My Lord would not care for you were it not for your prayer, but you have indeed rejected (the truth), so that which shall cleave shall come. Al Furqaan 25 : 77
Allah turns in mercy to those who pray to Him or call on Him. So the excellence of a man depends on the degree of sincerity and devotedness in his supplication unto Allah.

4. بِسْمِ اللهِ الرَّحْمنِ الرَّحِيمِ
وَإِذَا سَأَلَكَ عِبَادِي عَنِّي فَإِنِّي قَرِيبٌ أُجِيبُ دَعْوَةَ الدَّاعِ إِذَا دَعَانِ فَلْيَسْتَجِيبُواْ لِي وَلْيُؤْمِنُواْ بِي لَعَلَّهُمْ يَرْشُدُونَ
And when My servants ask you concerning Me, then surely I am very near; I answer the prayer of the suppliant when he calls on Me, so they should answer My call and believe in Me that they may walk in the right way. Al Baqarah 2 : 186
this verse short as it is ‑
repeats the first person singular pronoun seven times;
it is the only verse with this characteristic in the whole of Qur’an.

5. بِسْمِ اللهِ الرَّحْمنِ الرَّحِيمِ
وَلَقَدْ خَلَقْنَا الْإِنسَانَ وَنَعْلَمُ مَا تُوَسْوِسُ بِهِ نَفْسُهُ وَنَحْنُ أَقْرَبُ إِلَيْهِ مِنْ حَبْلِ الْوَرِيدِ
And certainly We created man, and We know what his mind suggests to him, and We are nearer to him than his life-vein. Qaaf 50 : 16
Allah created man, so by virtue of His being the creator, He is aware of man's inherent weaknesses. He gave man intellect, consciousness and free-will. The phrase "nearer than the jugular vein" implies that Allah knows, more truly, the innermost state of man's feelings and consciousness, than does his own self.

6. بِسْمِ اللهِ الرَّحْمنِ الرَّحِيمِ
وَقَالَ رَبُّكُمُ ادْعُونِي أَسْتَجِبْ لَكُمْ إِنَّ الَّذِينَ يَسْتَكْبِرُونَ عَنْ عِبَادَتِي سَيَدْخُلُونَ جَهَنَّمَ دَاخِرِينَ
And your Lord says: "Call on Me; I will answer your (Prayer): but those who are too arrogant to serve Me will surely find themselves in Hell - in humiliation!“ Al Ghaafir 40 : 60

7. Imam Ali ibna abi Talib says:
Put faith in Allah. Seek His protection.
Direct your prayers, requests, solicitations and supplications to Him and Him alone.
To give as well as to withhold lies in His (only in His) power.
Ask as much of His favours as you can.
Know that Allah owns the treasures of the heavens and the earth. Not only He has given permission to ask for His mercy and favours, but also has promised to listen to your prayers. He has not appointed guards to prevent your prayers reaching Him. Invoke His help in difficulties and distress. Implore Him to grant you long life and sound health. Pray to Him for prosperity.
Think over it that by simply granting you the privilege of praying for His favours and mercy, He has handed over the keys of His treasures to you. Whenever you are in need, pray, and He gives His favours and blessings.
Sometimes you find requests are not immediately granted. Do not be disappointed. Fulfillment of desires rests with the true purpose or intention of the prayer. More often fulfillment is delayed because the merciful Lord wants to bestow upon you suitable rewards. In the meantime bear patiently hardships, believing sincerely in His help. You will get better favours, because, unknowingly, you may ask for things which are really harmful to you. Many of your requests, if granted, may bring eternal damnation.
8. So, at times, withholding fulfillment is a blessing in disguise.