Professor Shaikh Mohammad Ashraf Sulemani (Allah have mercy on him) said,

‘In general, prevalent Tasawwuf in Muslim communities is of three types;
1. Tasawwuf that is subservient to Shariah
2. Tasawwuf that is a philosophical theory
3. Tasawwuf that revolves around innovations (bida)

The real Islamic Tasawwuf is the one that is totally subservient to Shariah.’

Mard e Darvesh, page 186