Every human being possesses desire, but a person cannot become a believer until they give precedence to the greatness of God over all of their desires. The Arabic word wali means a near one or a friend. Therefore, a person is referred to as a wali (or a saint) when they desire what their Friend, i.e. God, desires. Allah the Exalted states:
وَمَا خَلَقۡتُ ٱلۡجِنَّ وَٱلۡإِنسَ إِلَّا لِيَعۡبُدُونِ
‘And I have not created the Jinn and the men but that they may worship Me.’
An individual ought to possess a zeal for the sake of God and if they do, they shall outstrip their fellow man and become among those who enjoy the nearness of God. One must not be like a dead corpse – when something is put in from one side of the mouth, it comes out of the other. In the same manner, when someone is in a wretched state, nothing good can go inside. Remember that no worship or charity is accepted until one possesses a sincere fervour for the sake of Allah Almighty – a fervour that is free from traces of selfishness or personal motive. It ought to be such that even a person himself is unable to explain why they possess this fervour. There is a dire need for such people, but nothing is possible without the will of God.
Hazrat Mirza Ghulam Ahmad (as), Malfuzat – Volume II (Farnham, Surrey: Islam International Publications Ltd., 2019), 109-110.
 The Holy Qur’an, 51:57.