Vaisesika Sūtras
Vaisesika Sūtra 3.2.06
यज्ञदत्त इति संन्निकर्षे प्रत्यक्षाभावाद् द्रुष्टं लिङ्गं न विद्यते ॥६॥
The indication of Yajñadatta in proximity is not perceived due to absence of direct perception.