Here are three types of services that are central to the attainment of divine grace. These are service by wealth, body and mind (Dhann, Tann, Mann).
The Service by Wealth
brings renunciation to the mind and the attraction of materialism lessens. The individual starts becoming detached to the external material world and focuses on the divine, entering the state of detachment).
Service by the Body
Means working with hands and feet for the welfare of mankind. For instance, cleaning and dusting the shoes of the Saadh Sangat, washing utensils , cooking and serving Langar, taking care of the sick and the needy, providing a helping hand in the construction of religious places or facilities for the society and other deeds performed physically.
Bin sewa dhrig hath pe-ir hor nehfal karni. If one does not render divine service, his hands and feet are worthless. So also the deeds performed with them. Such sewa enables man to transcend the joys and sorrows of the body, making an effort towards suppressing the ego and focusing on dedication on the Divine Name.
The Service by Mind
The highest service is that of the mind. Through this the individual surrenders his identity towards becoming one with the Lord. Service by wealth involves sharing the fruits of selfless hard work. In other words, sharing a part of our honest earnings and dedicating it to the Guru for the benefit of the needy and underprivileged. This is a pre-requisite to follow the path of virtuous living leading to the Divine: Service of the mind is to distract the mind from vices of lust, anger, greed, attachment and ego and to unite the mind with Guru and to accept the Lord’s Will gracefully.