Srimad-Bhagavatam: Canto 2 - Chapter 1 - Verse 27

Sanskrit:

उत्सिसृक्षोर्धातुमलं निरभिद्यत वै गुदम् ।तत: पायुस्ततो मित्र उत्सर्ग उभयाश्रय: ॥ २७ ॥

ITRANS:

utsisṛkṣor dhātu-malaṁnirabhidyata vai gudamtataḥ pāyus tato mitrautsarga ubhayāśrayaḥ

Translation:

Thereafter, when He desired to evacuate the refuse of eatables, the evacuating hole, anus, and the sensory organ thereof developed along with the controlling deity Mitra. The sensory organ and the evacuating substance are both under the shelter of the controlling deity.

Purport:

Even in the matter of evacuating stool, the refuse is controlled, so how can the living entity claim to be independent?