13:5
महाभूतान्यहंकारो बुद्धिरव्यक्तमेव च ।
इन्द्रियाणि दशैकं च पञ्च चेन्द्रियगोचराः ॥१३- ५॥
mahaabhootaanyahaMkaaro buddhirawyaktamewa cha ।
indriyaaNi dashaikaM cha paJNcha chendriyagocharaaH ॥१३- ५॥
Source: Automatic ITRANS Transliteration
The great elements, ego, intellect and the unmanifest
And the ten organs and the one and the five sense-objects.
Source: Milind S. Pandit
The five basic elements, the "I" consciousness or ego, the intellect, the unmanifest Prakriti, the ten senses, the mind, and the five sense objects; (See also 7.04)
That knowledge of the field of activities and of the knower of activities is described by various sages in various Vedic writings--especially in the Vedanta-sutra--and is presented with all reasoning as to cause and effect.
Source: Bhagavad Gita As It Is