Avoid innovation and follow sunnah

'Uthmaan Ibn Haadir:

*"I said to 'Abdullaah Ibn 'Abbaas, 'Advise me.' He said, 'It is upon you to be upright, and follow the first affair (the way of the Prophet and his Companions), and do not innovate.' "*

[al-Ibaanah (1/319) by Ibn Battah]