Bhagavad Gita 8.7

8.7 Therefore at all times remember Me only and fight. With mind and intellect fixed (or absorbed) in Me, thou shalt doubtessly come to Me alone.

Therefore, Arjuna, you should always think of Me in the form of Kṛṣṇa and at the same time carry out your prescribed duty of fighting. With your activities dedicated to Me and your mind and intelligence fixed on Me, you will attain Me without doubt.