Bhullar didn’t engage and got two warnings (yellow cards) before that. (At least that’s I assume; I switched away after the second yellow card and they were discussing potential disqualification if he didn’t do more.)
Edit: You can find the clip in another post: https://kbin.social/m/mma/t/870220/SPOILER-Disqualification-For-Inactivity-Between-Amir-Aliakbari-vs-Arjan-Bhullar