Kaṇha and Kaṇhā (feminine) are the Pāli equivalents of the Sanskrit words Kṛṣṇa and Kṛṣṇā (feminine) so it's unlikely you will find these names in Hindu scripture.
The Pali Text Society's Pali-English Dictionary has the following meaning:
Kanha (adj.) [cp. Vedic kṛṣṇa, Lith. kérszas] dark, black, as attr. of darkness, opposed to light, syn. with kāḷa (q. ...
Bro Its not necessary that God ji appears in front of you in 2minutes or 2days or 2 months after sadhna, try to do best and while doing sadhana do not think that,god is not seeing your efforts each second of your life is watched by him.Just try to remember that every moment in sadhna should be by heart and you are giving your 100% rather then calculating
what scriptures describe Parashurama as an Avesha Avatara of Vishnu?
Garga Samhita is a scripture describing Parashurama as an Avesha Avatara of Vishnu. The following excerpt clarifies it.
Shri Bahulashva said: How often does Lord Vishnu, who removes all that
is inauspicious, descend to this world to protect the devotees? O
The story of Indra and Vṛtra is metaphorical as explained below.
Since you cited a quote from the Rig Veda. Therefore, in the first place, the question of Viṣṇu helping Indra has to be understood in the context of the primary sources namely Vedas and Brahmanas.
In Śatapatha Brāhmaṇa, it is stated that
वृत्रो ह वा इदं सर्वं वृत्वा शिश्ये । यदिदमन्तरेण ...
No. There is no such thing.
If that is the case, then Vishnu the creator doesn't create anything which won't be any use to him.
If you offer any flower with pure devotion from the bottom of your heart then the Pooja is fulfilled. If you offer Gold flowers without devotion then the pooja is useless.
Rig Veda IX.96.5
सोमः पवते जनिता मतीनां जनिता दिवो जनिता पर्थिव्याः |
जनिताग्नेर्जनिता सूर्यस्य जनितेन्द्रस्य जनितोत विष्णोः ||
Father of holy hymns, Soma flows onward the Father of the earth,
Father of heaven: Father of Agni, Sūrya's generator, the Father who
begat Indra and Viṣṇu.
According to one school of thought, Soma is bliss or ...
(excerpt from http://gloriouskrishna.blogspot.com/2011/11/taraka-brahma-nama-holy-name-which.html)
Taraka Brahma Nama (The Holy Name which Delivers All)
‘taraka-brahma-nama’ which means this transcendental mantra is the deliverer of one and all.
narayana para veda
narayana para muktir
The purport behind it is -- ...