First you need to gave caught the kyogre or groudon in heartgold or soulsilver. Then go to professor oak's lab put the kyogre first or groudon
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You show it to Professor Oak. After that, he'll ask you if you can obtain a Kyogre, which is only available on Pokemon Heart Gold. Once you obtain a Kyogre, put both Groudon and Kyogre in your party and show it to Professor Oak. He'll give you the Jade Orb, which enables you to catch Rayquaza.
After catching Kyogre, obtain a Groudon from a friend with Pokemon SoulSilver. You only need the Groudon temporarily. Talk to Professor Oak with both in your party, and Professor Oak will give you the Jade Orb to catch Raquayza.
You have to have Kyogre and Groudon in your party with you in Pokémon HeartGold and then you have to go see Professor Oak while you have them with you. If both Kyogre and Groudon have been caught in the Embedded Tower then Professor Oak will give you the Green Orb aka the Jade Orb.
You have to have both Kyogre and Groudon. You get the Red Orb from Mr. Pokemon to catch Groudon in the Embedded Tower. In addition, the Groudon has to be from SoulSilver and the Kyogre must be from HeartGold. Show them to Professor Oak for the Jade Orb to awaken Rayquayza.
Because you must have a Groudon (soul silver) and a Kyogre (heart gold) and then professor oak will give you the jade orb