Astanga Hrudaya
मूर्द्धा द्वे सक्थिनी बाहू सर्वसूक्ष्माङ्गजन्म च। सममेव हि मूर्द्धाद्यैर्ज्ञानं च सुख़दुःख़योः॥५५॥
viz, the head, two legs, and two arms, and also all the minor parts simultaneously with the head etc, the knowledge of pleasure and pain also
english translation