Teyt 2491
The lord instructs Sanātana Cosvāmī i
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the Lord. We should not consider them to belong to this material world. As stated in  Bhagavad-gītā :
avajānanti māṁ mūḍhā mānuṣīṁ tanum āśritam paraṁ bhāvam ajānanto mama bhūta-maheśvaram
“Fools deride Me when I descend in the human form. They do not know My transcendental nature and My supreme dominion over all that be.” (Bg. 9.11)
Avatāras  descend of their own free will, and although they may act like ordinary human beings, they do not belong to this material world. Lord Kṛṣṇa and His  avatāras  can be understood only by the grace of the Lord.
nāyam ātmā pravacanena labhyo na medhayā na bahunā śrutena yam evaiṣa vṛṇute tena labḥyas tasyaiṣa ātmā vivṛṇute tanūṁ svām (Kaṭha Ṵpaniṣad 1.2.23)
athāpi te deva padāmbuja-dvaya-prasāda-leśānugṛhīta eva hi janāti tattvaṁ bhagavan-mahimno na cānya eko ‘pi ciraṁ vicinvan (Bhāg. 10.14.29)
TEXT 249
অবতার। হৃদংখ্যার। হরের: সন্বনিষেদ্বিজা:।।
श्रीशैं  , श्री  शिवागिनः   कुलाः   मनः स्राः   मस्त्रिणः  ॥ २८७ ॥
॥
avatārā hy asaṅkhyeyā hareḥ sattva-nidher dvijāḥ yathā ‘vidāsinaḥ kulyāḥ sarasaḥ syuḥ sahasraśaḥ
SYNONYMS
avatārāḥ  —all the incarnations;  hi —certainly;  asaṅkhyeyāḥ —beyond counting;  hareḥ —from the Supreme Personality of Godhead;  sattva-nidheḥ —who is the