Musannaf Ibn Abi Shayba 21:316

Waki’ narrated to us, from Sharik, from Ya’la ibn ‘Ata, from Abu Muhsin, from Abu al-Darda’, who said: "Excellent, excellent for five: 'Subhan Allah' (Glory be to Allah), 'Al-Hamdulillah' (Praise be to Allah), 'La ilaha illallah' (There is no god but Allah), 'Allahu Akbar' (Allah is the Greatest), and a righteous child who dies."