Musannaf Ibn Abi Shayba 33:1281

'Affan narrated to us, he said: Ja'far ibn Sulayman narrated to us, he said: Malik ibn Dinar narrated to us, he said: I asked Jabir ibn Zayd, I said: "The saying of Allah the Exalted: 'And had We not strengthened you, you would have almost inclined to them a little. Then [if you had], We would have made you taste double [punishment in] life and double [punishment after] death. And then you would not find for yourself against Us any helper.' What is the double of life and the double of death?" Jabir said: "The double of the punishment of the world and the double of the punishment of the Hereafter. 'And then you would not find for yourself against Us any helper.'"