Matsya Purana 259.16

259.16

nārasiṃha varāho vā tathānye'pi bhayaṅkarāḥ.
nādhikāṅgāṃ na hīnāṅgāṃ kartavyā devatāḥ kvacit .. 259.15

The image of the Lord with 4 or 8 hands represents His Jñāna Yogeśvara form. The image of His Bhairava form should be made with an aquiline nose, sharp teeth and formidable appearance and can be placed in every house. The images of Bhairava Narasiṅha and Varāha are also formidable and these should never be placed in the Mûla ayatana (main dwelling house).—13-15

No image is to be made with lesser or greater number of limbs than usual. An image with some limb missing or one with a formidable appearance brings ruination on the owner, the one with limbs in excess destroys the sculptor, lean images devastate the riches, the one with a lean and thin abdomen brings about famine, the one with less fleshy appearance ruins wealth, the one with a crooked nose brings about misery, the one with sparse limbs are terrible causes of misfortune and fear.—16-17