We have heard this Shruti that the sacrifice which high-souled Brahmanas perform by wealth acquired by excessive physical labour, does not yield great merit.
शरीरवृत्तमास्थाय इत्येषा श्रूयते श्रुतिः। नातिसम्यक् प्रणीतानि ब्राह्मणानां महात्मनाम्॥