Musannaf Ibn Abi Shayba 21:147

Waki’ narrated to us, from Shu’bah, from al-Hakam, from Abu ‘Amr al-Sini, and from Sufyan, from ‘Abd al-‘Aziz ibn Rufay’, who heard it from Abu ‘Amr, from Abu al-Darda’, who said: I said, "O Messenger of Allah, the wealthy have taken away the reward. They pray as we pray, they fast as we fast, they perform Hajj as we perform Hajj, and they give charity while we do not find anything to give in charity." He said: "Shall I not guide you to something that, if you do it, you will overtake those who have surpassed you, and no one who comes after you will overtake you, except for the one who does what you do? You glorify Allah (say *SubhanAllah*) thirty-three times, you praise Allah (say *Alhamdulillah*) thirty-three times, and you magnify Allah (say *Allahu Akbar*) thirty-four times at the end of every prayer."