ज्ञेयो वै निषधो नाम हंसपक्षौ पराङ्गमुखौ । जालवातायनादीनां प्रयोक्तव्योऽभिघट्टने ॥ १४७॥
The hand gesture known as Niṣadha, with Haṁsapakṣa hands turned outward, is to be used in representing lattice windows and similar objects, as well as in striking actions.
english translation