दत्तः शनैर्नाशयमेति बस्तिः कण्ठं प्रधावत्यतिपीडितश्च| शीतस्त्वतिस्तम्भकरो विदाहं मूर्च्छां च कुर्यादतिमात्रमुष्णः||२१||
If the bladder is compressed slowly, then the enema- fluid may not reach the colon. If the bladder is strongly compressed, then the fluid may rush very fast even up to the throat. If the enema- fluid is very cold, then it may cause stiffness. If the enema – fluid is very hot, then it may cause burning sensation and fainting.
If the enema – fluid is very unctuous, then it may cause numbness. If the enema- fluid is ati ruksha, then it may cause aggravation of vayu. If the enema – fluid is very thin or added with less quantity of salt, then it may lead to ayoga. If the enema- fluid is administered in large quantity, then it may cause ati-yoga. If the enema-fluid is viscid, then it may cause emaciation of the patient, and it moves in the colon very slowly.
If the enema- fluid contains salt in excess, then it may cause burning sensation and diarrhea. Therefore, basti should be properly administered. Sequence in preparation of basti formulation At first madhu (honey) and saindhava (rock salt) should be taken khalva, then sneha followed by kalka,
विमथ्य संयोज्य पुनर्द्रवैस्तं बस्तौ निदध्यान्मथितं खजेन| वामाश्रये हि ग्रहणीगुद च तत् पार्श्वसंस्थस्य सुखोपलब्धिः||२४||
kashaya and avapa, churning should be while adding these dravya. It is said that the basti should be administered to the patient lying on left lateral side as the grahani and guda are situated on the left side of the body, and the vali (valves) get relaxed.
लीयन्त एवं वलयश्च तस्मात् सव्यं शयानोऽर्हति बस्तिदानम्| विड्वातवेगो यदि चार्धदत्ते निष्कृष्य मुक्ते प्रणयेदशेषम् ||२५||
Therefore, basti should be given when the patient is lying on his left side. If during middle of enema administration, the patient gets an urge to pass feces or flatus, the enema nozzle should be drawn out and the when the urge has passed away, the remaining solution, should be injected.