"Zarbon, has Prince Vegeta been sent away yet? It seems that the foolish king of these monkeys is beginning to make his moves against me." Frieza asked his second in command from the comfort of his hover chair as a servant refilled his wine glass.
"Yes, sir. After the young second prince's disappearance, it wasn't difficult to convince that imbecile to send his son away for 'training' purposes. He sent a heavy guard with the young Vegeta Junior, however." Zarbon replied, checking his scouter to confirm Prince Vegeta's location, "He will be away for the next two months, at least. Are you certain that you wish to do this personally, my lord? I would be happy to-"
"Zarbon, you wouldn't be implying that you would like to deny me the satisfaction of watching those monkeys die by my own hand?" Frieza asked it casually, taking a sip of wine as he did, but Zarbon had spent enough time as the tyrant's closest aide to feel the unseen pressure that came with his boss's statement. It wasn't a question, it was a declaration, and Frieza's way of asking for an apology.
One that Zarbon immediately provided. "My apologies, my lord. I simply believe that those… Saiyans… are beneath you. Granting them the honor of your personal attention… That… Vegeta does not deserve the honor of being destroyed by your hand. I or the Ginyu Force should be more than enough to get the job done." He advised, bowing his head.
"Perhaps you have a point, Zarbon. Ginyu would definitely be fine for getting rid of my pest problem… But you've overheard their little 'meetings', too, haven't you? Such insolence deserves a… more personal punishment. Besides, you forget your place. You aren't much stronger than Dodoria. You stay away from those monkeys, Zarbon."
"...Understood, My lord. I will tell the captain to set a course to Planet Vegeta immediately." Zarbon turned to leave, but a voice stopped him.
"I would belay that order if I were you." The casual way the words completely overrode Frieza's authority inside his private chambers sent a chill through Zarbon's entire body as he paused in place, but Frieza didn't.
"Leave us immediately!" The tyrant immediately shouted. Zarbon and the servant in question didn't even spare the purple, cat-like figure a single glance as they booked it away.
As soon as the door closed behind his servants, Frieza got out of his hover chair and immediately began groveling on his hands and knees. "L-Lord Beerus! My sincerest apologies for the cold greetings! I-if you'd only given-"
"Shut up, Frieza." Frieza's jaw immediately stopped working, "Whis. Tell me, am I wrong, or was Frieza just talking about destroying the Saiyan homeworld."
"The new Saiyan homeworld, my lord, yes. They relocated fairly recently." The blue-skinned attendant confirmed.
"Yes, you see, Frieza, I'm here because I heard about that. As it happens, I have an interest in that particular race."
"You wish for me to spare them, my lord?" Frieza asked.
Beerus put a hand to his chin in thought for a moment. "...Not exactly. Saiyans do have a history of being a pain… But I hate the delicate balance of this Universe's cosmic order being destroyed so easily. Only I am allowed to freely destroy worlds with such… interesting inhabitants."
Frieza's mind stuttered. "...You? Destroying them personally?"
"Too much work." Beerus replied immediately, "Especially since they'll probably destroy the planet eventually, in the next few centuries or so… I'd be willing to allow you to do so… maybe…"
"Maybe?"
"How about this? I'm going to go to Vegeta personally. Sample cuisine, I haven't had a Saiyan meal in ages… While I'm there, I will assign King Vegeta a task. If he completes it, then the planet's under my protection from you. If not…"
"I understand, Lord Beerus. How much time will you grant them?"
"One year. Let's go, Whis, I dislike the presence of lizards."
"Of course, my lord." And in the next moment, the God and his Angel were gone in a flash of light.
..
As Beerus had expected, the only thing that he found interesting about going to the Saiyan homeworld was pinning King Vegeta's prideful head beneath his boot as he made his demand:
"Get me the best pillow in the universe."
The food wasn't worth staying for. Honestly, Beerus would normally have destroyed a planet for having cuisine as unpalatable as Vegeta's, but Saiyans had always been rather special, as far as Universe 7's cosmic order went, so he simply refrained from staying long.
"Oh, how the mighty have fallen, huh, Whis?"
"You aren't wrong, my lord. I miss the Saiyans of old."
…
Six months came and went. By now, Beerus had very little patience left for his game, but his pride wouldn't allow him to fall asleep before finishing it. Luckily, just as he was thinking about going back to sleep, Whis showed him an interesting image on the Angel's staff.
…
"AHAHAHA! 10,074! My power level is 10,074 now! A twenty point increase in one single night! With this pillow, I'll surpass everyone and become the strongest there is! A Super Saiyan! AHAHAHA! Nobody will stop me!"
Beerus paused the ball for a moment, "Normal Super Saiyans… aren't they just barely on par with Frieza?" He asked his attendant.
"Well, the Legendary one that comes along every thousand years tends to be pretty strong, but other than that… Vegeta won't find that pillow much help." Whis replied.
Shrugging, Beerus allowed the video to continue playing. "Sir? Aren't we supposed to hand that pillow over to Lord Beerus in six months? Will that really be enough time for you to get strong enough to-" King Vegeta's attendant started, but was cut off by the king sending a powerful blast his way, vaporizing the poor, sensible, completely correct man.
While that pillow did make people who slept on it passively more powerful, it was a flat increase of about twenty points worth of energy per night. In other words, sleeping on that pillow every single night for 100 whole years would barely put King Vegeta on par with Frieza's first form.
And no, the pillow did not grant immortality or eternal youth.
"I'll simply surpass Beerus as well! NOTHING WILL STOP THE KING OF SAIYANS! AHAHAHAHAHA!"
"... Let's go get my pillow. After I go to bed, feel free to tell Frieza that he can destroy the Saiyans at any time, Whis." Beerus said, deadpan. He wasn't even surprised, or impressed by the Saiyan's belligerence like he'd normally be. Somehow, the old Saiyan King's idiocy just surpassed the bounds of 'impressively dumb' and circled all the way back past 'drooling brainless idiocy', through 'Impressively brainless, how are you actually capable of breathing without giving yourself an aneurism', and stopping at 'Yeah, I'm just done with this.'
And so was Whis. After Beerus went to bed, Whis simply went about his day, not even bothering to inform Frieza that he had the right to destroy the Saiyans' homeworld.
And thus, around one year after Tarble's team and the Celatians set foot on Planet Namek, somewhere near Tarble's seventh birthday, Frieza destroyed Planet Vegeta, just as he had in the original timeline.