SB 3.9.11: O my Lord, Your devotees can see You through the ears by the process of bona fide hearing, and thus their hearts become cleansed, and You take Your seat there. You are so merciful to Your devotees that You manifest Yourself in the particular eternal form of transcendence in which they always think of You.
SB 2.8.6: A pure devotee of the Lord whose heart has once been cleansed by the process of devotional service never relinquishes the lotus feet of Lord Kṛṣṇa, for they fully satisfy him, as a traveler is satisfied at home after a troubled journey.
"Yogis try to concentrate their minds upon the form of the Supersoul, Vishnu, within the heart, but this same objective is easily achieved when one’s mind is absorbed in the Deity worshiped in the temple. In every temple there is a transcendental form of the Lord, and one may easily think of this form. By seeing the Lord during ärati, by offering bhoga and by constantly thinking of the form of the Deity, one becomes a first-class yogi." SB 6.2.41p
SB 3.1.16: Thus being pierced by arrows through his ears and afflicted to the core of his heart, Vidura placed his bow on the door and quit his brother's palace. He was not sorry, for he considered the acts of the external energy to be supreme.
SB 3.12.18-20: "My dear son, you had better situate yourself in penance, which is auspicious for all living entities and which will bring all benediction upon you... By penance only can one even approach the Personality of Godhead, who is within the heart of every living entity and at the same time beyond the reach of all senses." Thus Rudra, having been ordered by Brahmā...entered the forest to perform austere penances.
SB 3.4.8-9: The Lord was sitting, taking rest against a young banyan tree, with His right lotus foot on His left thigh, and although He had left all household comforts, He looked quite cheerful in that posture. At that time, after traveling in many parts of the world, Maitreya, a great devotee of the Lord and a friend and well-wisher of the great sage Kṛṣṇa-dvaipāyana Vyāsa, reached that spot out of his own perfect accord. http://vedabase.net/sb/3/4/8/en