विधिहीनमसृष्टान्नं मन्त्रहीनमदक्षिणम्।श्रद्धाविरहितं यज्ञं तामसं परिचक्षते
vidhi-hīnam asṛiṣhṭānnaṁ mantra-hīnam adakṣhiṇam śhraddhā-virahitaṁ yajñaṁ tāmasaṁ parichakṣhate
Sacrifice that is contrary to scriptural command, that is unaccompanied by prayers or gifts of food or money, and is without faith—that is the product of ignorance.
Translated by Shri Purohit Swami
They declare that sacrifice to be Tamasic which is contrary to the ordinances of the scriptures, in which no food is distributed, and which is devoid of mantras, gifts, and faith.
Translated by Swami Sivananda
Word meanings (from the gita/gita dataset)
vidhi-hīnam—without scriptural direction; asṛiṣhṭa-annam—without distribution of prasādam; mantra-hīnam—with no chanting of the Vedic hymns; adakṣhiṇam—with no remunerations to the priests; śhraddhā—faith; virahitam—without; yajñam—sacrifice; tāmasam—in the mode of ignorance; parichakṣhate—is to be considered