salaam. What is the definition of Bida in the Shafi School

Wa alaykum salam wa rahmatuLlahi wa barakatuHu,

In Tahdhib al-Asma wa al-Lughat 3/22, Imam Nawawi mentioned that bid'ah is the introduction of anything that was not done in the Prophet's time. It is divided into: praiseworthy innovation and blameworthy innovation. Imam Bayhaqi related that Imam Shafi'i divided bid'ah into these two categories.

And Allah knows best.

Answered by Shaykh Yaqub Abdurrahman