http://shradhasaburi.blogspot.in/2011/09/dashavatara.html
We have all heard this from our grandmother, Paurnamasi. She has informed us that Krsna was born in a ksatriya family previous to this birth and was known as Ramacandra. In that birth, instead of killing Vali, an enemy of His friend, in the manner of a ksatriya, He killed him just like a hunter. A hunter takes a secure hiding place and then kills an animal without facing it. So Lord Ramacandra, as a ksatriya, should have fought with Vali face to face, but instigated by His friend, He killed him from behind a tree. Thus He deviated from the religious principles of a ksatriya. Also, He was so attracted by the beauty of Sita that He converted Surpanakha, the sister of Ravana, into an ugly woman by cutting off her nose and ears. Surpanakha proposed an intimate relationship with Him, and as a ksatriya He should have satisfied her. But He was so selfish that He could not forget Sitadevi and converted Surpanakha into an ugly woman. Before that birth as a ksatriya, He took His birth as a brahmana boy known as Vamanadeva and asked charity from Bali Maharaja. Bali Maharaja was so magnanimous that he gave Him whatever he had, yet Krsna as Vamanadeva ungratefully arrested him just like a crow and pushed him down to the Patala kingdom.
https://freeglobaluniversity.blogspot.com/search/label/Bee
We have all heard this from our grandmother, Paurnamasi. She has informed us that Krsna was born in a ksatriya family previous to this birth and was known as Ramacandra. In that birth, instead of killing Vali, an enemy of His friend, in the manner of a ksatriya, He killed him just like a hunter. A hunter takes a secure hiding place and then kills an animal without facing it. So Lord Ramacandra, as a ksatriya, should have fought with Vali face to face, but instigated by His friend, He killed him from behind a tree. Thus He deviated from the religious principles of a ksatriya. Also, He was so attracted by the beauty of Sita that He converted Surpanakha, the sister of Ravana, into an ugly woman by cutting off her nose and ears. Surpanakha proposed an intimate relationship with Him, and as a ksatriya He should have satisfied her. But He was so selfish that He could not forget Sitadevi and converted Surpanakha into an ugly woman. Before that birth as a ksatriya, He took His birth as a brahmana boy known as Vamanadeva and asked charity from Bali Maharaja. Bali Maharaja was so magnanimous that he gave Him whatever he had, yet Krsna as Vamanadeva ungratefully arrested him just like a crow and pushed him down to the Patala kingdom.
https://freeglobaluniversity.blogspot.com/search/label/Bee