Mixing with the Wrong Crowd

It is reported from Abû Qilâbah – Allâh have mercy on him – that he said:

Do not sit with the People of Desires (Bid’ah), for I fear that they will immerse you in their misguidance or mix up and confuse what you already know.

Ibn Battah, Al-Ibânah Al-Kubrâ Vol.1 p377.

Why People Invent Bid’ah

Muʿādh b. Jabal – Allāh be pleased with him – used to say:

Ahead of you are times of trials (fitan) in which there will be much wealth and in which the Qurān will be opened and taken (read) by believers and hypocrites, men and women, young and old and freemen and slaves. At that time it is likely that there will be people who will say, “Why aren’t the people following me when I have read the Qurān? They will not follow me until I invent something else.” So, beware of everything that is innovated (in religion), for those things that are innovated are misguidance.

Ibn Waḍḍāḥ, Al-Bidaʿ p62, Al-Lālakāʾī, Sharḥ Uṣūl Iʿtiqād Ahl Al-Sunnah wa Al-Jamāʿah 1:125, and others.