There are five senses in man. The mind is called the sixth. The Understanding is called the seventh. The Soul is the eighth.
इन्द्रियाणि नरे पञ्च षष्ठं तु मन उच्यते। सप्तमी बुद्धिमेवाहुः क्षेत्रज्ञं पुनरष्टमम्॥