[Eight defects of nozzle and its harmful effect] Netra which are 1. hrashvam (too small), 2. deergham (too long), 3. tanu (too thin), 4. sthoolam (too thick), 5. jeernam old and mutilated), 6. shithilabandhanam (having loosely tied/inappropriate fastening of basti putaka with netra ), 7. parshvachhidram (having hole – laterally on one side of netra) and 8. vakram (having bents or curves) are to be avoided. If these sort of nozzles are used while basti procedure, it results in corresponding eight doshas. These doshas (harmful effects) in the body as tabulated below:
No. Defect in Netra: Resultant dosha if used in procedure 1 Hrasvam: Aprapti (medication not reaching the intended site) 2 Deergham: Atigati (medication overreaching/crossing the intended site) 3 Tanu: Kshobha (Medication reaches guda only and causes kshobha (discomfort by its movement there/hitting the anal walls due to its loose dimensions)) 4 Sthoolam: Karshana (attrition due to oversize) 5 Jeernam: Kshanana(inflicts wound) 6 Shithilabandhanam: Sravah (leakage of medication while administering) 7 Parshvachhidram: Gudapeedha (causing pain/discomfort to the guda) 8 Vakram: Gatirjihma (medication travels transversely into the colon)