Mbh 12.263.2d

[1175] For this reason, grasping priests officiate at the Sacrifices of only those misguided persons who, without endeavouring to attain to Emancipation, seek for heaven. As regards those, however, that are really good, they always seek, by accomplishing their own duties, to cause others to ascend to heaven. Looking at both these kinds of behaviour, O Jajali, I have (abstained from injuring any creature in the world and have) come to regard all creatures with an equal heart.[1176] Endued with wisdom, many foremost of Brahmanas perform Sacrifices (which with respect to their fruits are of two kinds, for some of them lead to Emancipation whence there is no return, and others lead to regions of bliss whence there is return). By performing those Sacrifices, they proceed, O great ascetic, along paths trodden by the gods. Of one class of Sacrificers (viz., they who sacrifice from desire of fruit) there is return (from the region which they reach). Of those, however, that are truly wise (viz., those who sacrifice without being urged thereto by desire of fruit), there is no return. Although both classes of sacrificers, O Jajali, proceed along the path trodden by the deities (in consequence of the sacrifices they perform), yet such is the difference between their ultimate ends.[1177] In consequence of the success that attends the purposes formed in the mind of such men, bulls, without being forced thereto, willingly set their shoulders to the plough for assisting at tillage and to the yoke for dragging their cars, and kine pour forth milk from udders untouched by human hands. Creating sacrificial stakes (and other necessaries of Sacrifice) by simple fiats of the will, they perform many kinds of Sacrifice well-completed with abundant presents.[1178] One who is of such a cleansed soul may slaughter a cow (as an offering in Sacrifice).[1179] They, therefore, that are not of that kind should perform Sacrifices with herbs and plants (and not animals).