Musannaf Ibn Abi Shayba 21:398

Ghundar narrated to us, from Shu'bah, from 'Amr ibn Murrah, from 'Abdullah ibn Salamah, that 'Ali used to supplicate: "O Allah, establish us upon the word of justice, with contentment and correctness, and the uprightness of the Book, as guides who are guided, pleased and pleasing, neither astray nor leading others astray."