काणादं पाणिनीयं च सर्वशास्त्रोपकारकम् ।
kāṇādaṁ pāṇinīyaṁ ca sarva-śāstropakārakam |
(Unknown source)
“The work of Kaṇāda [i.e., Vaiśeṣika-darśana, or, loosely, logic] and the work of Pāṇini [i.e., vyākaraṇa, or, loosely, grammar] are helpful in all śāstras [i.e., all fields of knowledge].”