Srimad Bhagavatam Canto 04, Chapter 13, Text 28

SB 4.13.28

na vidameha devanam
helanam vayam anv api
yan na grhnanti bhagan svan
ye devah karma-saksinah
 
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
Dear King, we do not find any reason that the demigods should feel insulted or neglected in any way, but still the demigods who are witnesses for the sacrifice do not accept their shares. We do not know why this is so.
 
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
It is indicated herein that if there is negligence on the part of the priest, the demigods do not accept their share in sacrifices. Similarly, in devotional service there are offenses known as seva-aparadha. Those who are engaged in worshiping the Deity, Radha and Krsna, in the temple, should avoid such offenses in service. The offenses in service are described in The Nectar of Devotion. If we simply make a show of offering services to the Deity but do not care for the seva-aparadha, certainly the Radha-Krsna Deity will not accept offerings from such nondevotees. Devotees engaged in temple worship should therefore not manufacture their own methods but should strictly follow the regulative principles of cleanliness, and then offerings will be accepted.
Srimad Bhagavatam Canto 04, Chapter 13, Text 27
Srimad Bhagavatam Canto 04, Chapter 13, Text 29