What is the etymology (nirukta or nispatti) of Visha in Rig Veda? What is the Mukhya Artha and what are the Amukhya arthas during in Vedic Sanskrit?
Some people were claiming that Rig Veda 10.136.7 says Vayu churned poison for Rudra. Because the word Visha is there. But Sayanacharya interprets this as water.
वायुरस्मा उपामन्थत्पिनष्टि स्मा कुनन्नमा । केशी विषस्य पात्रेण यद्रुद्रेणापिबत्सह ॥
vāyur asmā upāmanthat pinaṣṭi smā kunannamā | keśī viṣasya pātreṇa yad rudreṇāpibat saha ||
English translation: “Vāyu churned for him, the inflexible (thunder) ground it when the radiant (Sun), along with Rudra,drank the water with his cup.”
Commentary by Sāyaṇa: Ṛgveda-bhāṣya With his cup: the cup is the sun's rays, which absorb the moisture of the earth; theagitation of the wind sends this moisture down again as rain; kunan namā = that which often guides but cannotbe guided, i.e., the mādhyamikā vāk;
Rudra = the lightning, vaidyutāgni
But Rig Veda 1.191.16 seems to mean the word Visha as poison.
कुषुम्भकस्तदब्रवीद्गिरेः प्रवर्तमानकः । वृश्चिकस्यारसं विषमरसं वृश्चिक ते विषम् ॥
kuṣumbhakas tad abravīd gireḥ
pravartamānakaḥ | vṛścikasyārasaṃ viṣam arasaṃ vṛścika te viṣam ||
English translation: “Hastening forth at the command (of Agastya), thus spoke the mongoose: the venom of the scorpion is innocuous; scorpion, your venom is innocuous.”