At SB 3.7.31 Vidura asks for 'pAkhaNDa-patha-vaishamyaM pratiloma-niveshanam' — the divergence of the heretical paths and the placement against the grain. The verse holds them in the plural, as a difference among paths, which is why they are declared as a group.
The Pakhandas
पाखण्ड
Also known as Pakhanda-patha (the heretical paths)
The pakhandas are the group of paths held to differ from the Vedic way. At SB 3.7.31 Vidura asks for 'pAkhaNDa-patha-vaishamyaM pratiloma-niveshanam' — the divergence of the heretical paths and the placement against the grain — and then for 'jIvasya gatayo yAsh cha yAvatIr guNa-karma-jAH', the destinations of the jiva that arise from guna and karma. The verse holds the heretical paths as a plural class, differing among themselves.
Śrīmad Bhāgavata Mahāpurāṇa 3.7.31 — Sanskrit Wikisource (pinned chapter page; Devanagari from the cross-validated transcription in validation/sanskrit_skandha3.json)