Ashtangasamgraha 7.3_2

7.3_2

athaikasmin sakthni madhyamāṅgulimabhito madhye pādatalasya talahṛdayaṃ nāma marma tatra viddhasya rujayā maraṇam |

Now, on one leg, directly in line with the middle toe in the center of the sole of the foot, is the vulnerable point named talahṛdaya; when it is pierced, death occurs from pain.