Vegeta attempted to attack while in Super Saiyan but wasn't able to move his body.
Episode 7
Time: 17:13
Context: Vegeta is paralyzed when he tries to fight Beerus
Vegeta: “I can’t put any power in my body…”
Prior to Beerus arriving, it was established that he beat Goku in two blows and that Vegeta had no chance. Once Vegeta remembered who he was it solidified that fact in his mind. He knew it was futile to attack Beerus.
Episode 5
Time: 20:00
Context: Kaio warns Vegeta about Beerus
Kaio: “The God of Destruction Beerus-sama will arrive there very soon.”
Vegeta: “The God of Destruction Beerus? I’ve heard his name before.”
Kaio: “Anyway, when he arrives there, you absolutely must not fight him. Do you understand? Don’t do anything! Otherwise Earth itself will be destroyed.”
Vegeta: “Earth itself will be destroyed?”
Kaio: “Goku did something stupid and got easily defeated. With only two blows.”
Vegeta: “What? Kakarot defeated with only two blows?!”
Episode 6
Time: 8:35
Context: Vegeta remembers Beerus from the past
Vegeta: “The God of Destruction… Beerus… If it’s this guy, I can see him taking down Kakarot in only two hits.”
Never heard about the divisions of ki. Courage I get giving someone a boost compared to times of low courage, but "stable mind" is interesting, considering how much Gohan relied on not having a stable mind. I guess it could be just whatever mind is most suited to the individual as a fighter though (if Shouki just means mind/spirit/mood), which in Gohan's case is to be angry (because when he's not angry his mind is naturally too anxious or intellectual) and in Vegeta's case it's to be prideful.
Yeah that's a good point about Gohan, but if you compare it to Vegeta in this instance it's more or less the same. Gohan was never able to put out his true power unless enraged (as was Vegeta vs Beerus), so maybe rage overrules the 3 divisions of ki.