Keepप्रधाना मेरुदण्डेऽत्र चन्द्रसूर्याग्ररूपिणी ।इडा वामे स्थिता नाडी शुभ्रा तु चन्द्ररूपिणी ॥ 5-29 ॥Word by word (11)In plain wordsThese three run in relation to the spinal axis as lunar, solar and fiery currents. Iḍā, on the left, is bright and lunar in nature.