In The Name of Allah, The Most Merciful, The Bestower of Mercy.

Being mindful of Ahlul Bidah– hating and boycotting them- is the correct path to protect Ahlus Sunnah against falling into their fitnah.  And to be lackadaisical about them- to harbour a good suspicion of them and inclining towards them- is the beginning of the path towards misguidance and deviation. Allah said:

وَلَا تَرۡكَنُوٓاْ إِلَى ٱلَّذِينَ ظَلَمُواْ فَتَمَسَّكُمُ ٱلنَّارُ

And incline not toward those who do wrong, lest the fire should touch you. [Hud. 113]

Who is more unjust than Ahlul Bidah?  Ahlul Bidah are more evil than the sinners, and due to this the jurist of Basra and the most intelligent of them- Salam Bin Abee Mutee, may Allah have mercyu upon him – said, “It is more beloved to me that I meet Allah with the scroll of Hajjaj than meet Him with the scroll of Amr Ibn Ubaid”.

Amr Ibn Ubaid was a devote worshipper and one who abandoned the unnecessary permissible pleasures of the worldly life MashaaAllah, but he was misguided and a Mubtadi, while Hajjaj was an evil doer, one who shed blood and a criminal.  He [Salam Bin Abee Mutee] held that if he were to make a choice between meeting Allah with the scroll of Hajjaj and that of Amr Ibn Ubaid, he would choose to meet Allah with the scroll of Hajjaj- the blood shedder and oppressive evil doer.  And why is this? Due to his realisation regarding the danger and ugliness of bidah. And it is sufficient for us that the Messenger, peace and blessing of Allah be upon him, described [bidah] in his khutbah as the worst of all affairs, as reported in Jabir’s hadith.

An Excerpt from Al-Mawqif As-Saheeh Min Ahlil Bidah. page 12