Complex sentence: Sant Bahinabai was a student of saint Tukaram Without a guru or a "parampara" (tradition or sect) behind her, she is credited to have attained sainthood only on basis of her intense devotion to Vithoba, which is still echoed in her abhangas.
Split into simpler sentences: Sant Bahinabai was a student of saint Tukaram who has no guru, nor any "parampara" (tradition or sect). She attained sainthood exclusively on the basis of her intense devotion to Vithoba, a devotion reflected in her abhangas.