Musannaf Ibn Abi Shayba 33:814

Waki’ narrated to us, from Sufyan, from ‘Abd al-‘Aziz ibn Rufay’, who heard it from Abu ‘Umar al-Sini, from Abu al-Darda’, who said: I said, "O Messenger of Allah, the wealthy have taken away the reward. They pray as we pray, and they fast as we fast, and 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 catch up with those who have surpassed you, and no one who comes after you will catch up with you, except for the one who does what you do? You glorify Allah (say *SubhanAllah*) thirty-three times, and you praise Him (say *Alhamdulillah*) thirty-three times, and you magnify Him (say *Allahu Akbar*) thirty-four times after every prayer."