assalamwalaykuum wa rahmatallahi wa barakatahu The ahlul hadith nowadays are just referring their spiritual purification ideas to shuyukh like Imam Ibn al Qayyim or Imam Ibn Taymiyah. Their works are brilliant no doubt but if a muslim is serious about studying this field, which other ulama should he benefit from. Also is it true that the tareeqah is a legitimate way of attaining the purity of the heart. Are their any shuyukh who teach this science who are upon the way of the ahlul athar. Abul Hasan al An Nadwi rahimahullah in saviours of the islamic spirit vol.2 stated that al Izz Ibn Abdis Salaam followed the shadhili tariqah. Would it be a bid'a to follow a tariqah or would be just like following a madhab. I think it's a serious concern to address because a lot of the youth who are salafi do not find the ulama addressing these topics, like Imam Al Albani ra or Abu Ishaq al Huwayni. We end up neglecting our hearts Reason I ask is because there is a few shuyukh which are teaching naqshabandee tariqah according to the maslak of the deoband ulama, would it be a bid'a and heresy to attend their circles ?