Those who have devoted themselves completely to the service of Almighty Allah do not even bother to obtain a means of substance. Such people are being provided with financial help from anonymous sources. These pious people do not have hopes of material gain from people. They have complete trust in Almighty Allah. When they receive some gift from the public, they receive it with the Niyyah (intention) that Almighty Allah is the Giver and the donor is the means. To be of any assistance to such people is actually to do good to us.
Ghausul A�zam, Sayyiduna Sheikh Abdul Qaadir Jilani (alaihir rahmah) states that Nabi (sallal laahu alaihi wasallam) has recommended giving food to ascetics and pious persons and giving clothing to the Believers. By assisting such a person with worldly necessities we minimize his burden and enable him to devote himself completely to Almighty Allah. In this way, we will receive the reward of his good deeds since we have provided him with necessary physical nourishment and helped him furthering the cause of Almighty Allah. (Al-Fat�hur Rabbani, pg. 192)
The general public at times presents Mashaa�ikh and Ulama with gifts. This is a good practice as it frees them from worldly trivialities, enabling them to dedicate themselves fully in the work of Almighty Allah.
However, there are fraudulent persons amongst the Ulama and Mashaa�ikh who are involved in sinful deeds and practice acts refuted by the Sharee�ah. These people should not be given assistance or gifts since it makes the donor, if he is aware of the nature of such a person, an accomplice to the sin. The onus lies on the public to exercise discretion and judgment and decide if the person is deserving of any form of assistance.