1186
Śrīmad-Bhāgavatam
[Canto 3, Ch. 28]
TEXT 12
यदा मनः स्वं विरजं योगेन सुसमाहितम् । काष्ठां भगवतो यायेत्स्वनासाग्रवलोकनः ॥१२॥
yadā manaḥ svaṁ virajaṁ yogena susamāhitam kāṣṭhāṁ bhagavato dhyāyet sva-nāsāgrāvalokanaḥ
yadā —when;  manaḥ —the mind;  svam —own;  virajam —purified;  yogena —by  yoga  practice;  su-samāhitam —controlled;  kāṣṭhām —the plenary expansion;  bhagavataḥ —of the Supreme Personality of Godhead;  dhyāyet —one should meditate upon;  sva-nāsā-agra —the tip of one's nose;  avalokanaḥ —looking at.
TRANSLATION
When the mind is perfectly purified by this practice of yoga, then one should concentrate on the tip of the nose with half-closed eyes and see the form of the Supreme Personality of Godhead.
PURPORT
It is clearly mentioned here that one has to meditate upon the expansion of Viṣṇu. The word  kāṣṭhām  refers to Paramātmā, the expansion of the expansion of Viṣṇu.  Bhagavataḥ  refers to Lord Viṣṇu, the Supreme Personality of Godhead. The Supreme Godhead is Kṛṣṇa; from Him comes the first expansion, Baladeva, and from Baladeva come Saṅkarṣaṇa, Aniruddha and many other forms, followed by the  puruṣa-avatāras . As mentioned in the previous verses ( puruṣārcanam ), this  puruṣa  is represented as the Paramātmā, or Supersoul. A description of the Supersoul, upon whom one must meditate, will be given in the following verses. In this verse it is clearly stated that one must meditate by fixing the vision on the tip of the nose and concentrating one's mind on the  kalā , or the plenary expansion of Viṣṇu.
TEXT 13
प्रसवदनाम्भोजं
पञ्चगर्भारुणेक्षणम् ।
नीलोत्पलदलश्यामं
शङ्खचक्रगदाधरम् ॥१३॥