Sakhya-rati is described in the Bhakti-rasamrta-sindhu as follows...

Expressions researched:
"sakhya-bhakti-rasa" |"sakhya-rati"

CC Madhya-lila

CC Madhya 19.183-184, Purport:

Sakhya-rati is described in the Bhakti-rasāmṛta-sindhu (2.5.30) as follows:

ye syus tulyā mukundasya te sakhāyaḥ satāṁ matāḥ

sāmyād viśrambha-rūpaiṣāṁ ratiḥ sakhyam ihocyate

According to the opinion of advanced devotees and learned scholars, a devotee in sakhya-rati feels equal to the Supreme Personality of Godhead. This is a relationship in friendship. Due to having a friendly relationship with the Lord, not only is one free from material attachment, but one believes in equal dealings with the Supreme Personality of Godhead. This is called sakhya-rati. The sakhya-rati devotee is so advanced that he treats the Lord on an equal level and even exchanges joking words with Him. Although one is never equal to the Supreme Personality of Godhead, the sakhya-rati devotee feels equal to the Lord, and he does not feel guilty because of this. Usually it is offensive to consider oneself equal to the Lord. The Māyāvādīs, for example, consider themselves equal to the Lord, but such feelings entail bereavement because they are material. Sakhya-rati, however, is a feeling experienced in the mind by a pure devotee, and he is eternally related with the Supreme Personality of Godhead in that feeling.

CC Madhya 19.185, Purport:

Sakhya-bhakti-rasa is described as follows in the Bhakti-rasāmṛta sindhu (3.3.1):

sthāyi-bhāvo vibhāvādyaiḥ sakhyam ātmocitair iha

nītaś citte satāṁ puṣṭiṁ rasaḥ preyān udīryate

“According to one's original consciousness, ecstatic emotions may be exhibited as continuously existing in fraternity. When this stage of Kṛṣṇa consciousness is mature, it is called preyo-rasa or sakhya-bhakti-rasa.”