Allah already knows my needs ?

Du’aa’ is very important. It can change the Divine decree and relieve distress. It is beneficial with regard to what has been decreed and what has not been decreed. The Prophet (peace and blessings of Allaah be upon him) said: “Nothing can change the Divine decree except du’aa’. (Narrated by Ahmad, 5/277; Ibn Maajah, 90; al-Tirmidhi, 139. Classed as hasan by al-Albaani in Saheeh al-Jaami’, 7687. See also al-Saheehah, 145).

And he said: “Whoever has the gate of du’aa’ opened to him, has the gates of mercy opened to him. Allaah is never asked for anything that He gives which is more beloved to Him than being asked for good health and well-being. Du’aa’ is beneficial with regard to what has been decreed and what has not been decreed. So, O slaves of Allaah, you must make du’aa’.” (Narrated by al-Tirmidhi, 3548)

And he said: “No precaution can protect against the decree of Allaah. Du’aa’ is beneficial with regard to what has been decreed and what has not been decreed. The du’aa’ meets the calamity that has been decreed and wrestles with it, until the Day of Resurrection.” (Narrated by al-Tabaraani, 2/800 (33). Al-Albaani said in Saheeh al-Jaami’, 7739, (it is) hasan).

Some of those who neglect du’aa’, such as some of the Sufis, may use as evidence the hadeeth, “I have no need to ask because He knows my condition”. This hadeeth is false and has no basis. The scholars have spoken out against it and explained why it is false.